Make your plans to attend
Vaccination required
>
This conference provides a forum to present the latest advances in technology and product developments in next-generation optical communication including coherent, space- and mode-division multiplexed optical transmission systems. The conference program encompasses components and subsystems related to next-generation optical communication technology as well as coherent, ultra-wide band, space- and mode-division multiplexed optical communication systems. Early-stage concepts and controversial solutions are also welcome and encouraged.

We particularly invite students to submit their thesis work to this conference. Students who are first authors will be eligible for the Optical Communications Best Student Paper Awards.

Topics for the conference include but are not limited to:

Optical Communications Best Paper Awards

We are pleased to announce Best Paper Awards in Optical Communications, sponsored by Corning and NTT Electronics. These awards will recognize the outstanding work of students and professionals who present the most notable recent results with broad impact in the area of optical communications. Qualifying papers will be evaluated by the awards committee. Manuscripts will be judged based on technical merit, impact, and clarity. The winners will be announced immediately following the Optical Communications Joint Keynote Session, and the presenting authors will be awarded a certificate and cash prize.

To be eligible for the Best Student Paper Award, you must:
  • be a student without a doctoral degree (undergraduate, graduate, or PhD student)
  • be listed as an author on an accepted paper within conferences OE801, OE802, or OE803
  • have conducted the majority of the work to be presented
  • submit your manuscript online by 29 December 2021
  • present your paper as scheduled
  • be present at the Awards Ceremony.
To be eligible for the Best Technical Paper Award, you must:
  • be a post-doc or early career professional
  • be listed as an author on an accepted paper within conferences OE801, OE802, or OE803
  • have conducted the majority of the work to be presented
  • submit your manuscript online by 29 December 2021
  • present your paper as scheduled
  • be present at the Awards Ceremony.
How to Apply: After your Manuscript is submitted online (by 29 December 2021), send an email to nasfine@stny.rr.com by Monday 3 January 2022, stating your desire to be considered, and for which award you qualify.

IMPORTANT: The Proceedings for this conference will be published on the SPIE Digital Library on the first day of the meeting. Manuscript submission (4-page minimum) is obligatory for participation in the conference. Note the earlier manuscript due date of 29 December 2021.
;
In progress – view active session
Conference 12028

Next-Generation Optical Communication: Components, Sub-Systems, and Systems XI

In person: 25 - 26 January 2022
All sponsors
Show conference sponsors + Hide conference sponsors
View Session ∨
  • 1: Long-Haul Transmission and AI Networking I
  • 2: Long-Haul Transmission and AI Networking II
  • 3: Novel Fibers and Amplifiers I
  • 4: Novel Fibers and Amplifiers II
  • Optical Communications Awards and Panel Discussion on Integrated Photonics
  • 5: Free Space and Underwater Optics
  • 6: Short Reach and Optical Devices I
  • 7: Short Reach and Optical Devices II
  • Posters-Wednesday
Information

POST-DEADLINE ABSTRACT SUBMISSIONS

  • Submissions are accepted through 06-December
  • Notification of acceptance by 20-December

View Call for Papers PDF Flyer
Session 1: Long-Haul Transmission and AI Networking I
Session Chair: Guifang Li, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
12028-1
Author(s): Ruomei Mu, SubCom LLC (United States)
Show Abstract + Hide Abstract
Modern submarine cable systems have been evolved from harvesting ultra-high capacity within available limited bandwidth of single fiber pair into more power efficient space division multiplexing (SDM) system by employing pump sharing techniques cross multiple fiber pairs. Applying ITU recommended open cable design standard (G.977.1) for undersea cable system design will be discussed in more details. A few challenging issues including cost consideration vs maximizing capacity and connectivity optimization will be investigated. Representative key undersea products to support an integrated turn-key solution of modern undersea cable system will be briefly introduced.
12028-2
Author(s): Benjamin J. Puttnam, Ruben Sq Luis, Georg Rademacher, Yoshinari Awaji, Hideaki Furukawa, NICT (Japan)
Show Abstract + Hide Abstract
Space-division-multiplexing (SDM) is often proposed to increase both capacity and efficiency in optical fiber communication. Fibers with > 100 spatial channels and >10 Pb/s data-rates have been reported, but concerns over the mechanical reliability, production yield and ease of near-term adoption have led to investigation of more practical fibers. Here, focus on multi-core fibers with the same 125 um cladding diameter as standard single-mode fibers. Such fibers are compatible with standard cabling technology and have no requirement for MIMO demultiplexing of spatial channels, but may require new transmission bands to achieve high data-rates with moderate numbers of spatial channels.
12028-3
Author(s): Shohei Beppu, KDDI Research, Inc. (Japan)
Show Abstract + Hide Abstract
Real-time MIMO DSP is challenging but essential for practical deployment of coupled-core multicore fiber transmission systems as well as mode-division multiplexed transmission systems. We implemented a real-time MIMO DSP which can equalize four spatially-coupled signals (or four spatial modes) with dual polarizations by utilizing FPGA boards. With the real-time MIMO DSP, we show an experimental demonstration of real-time transoceanic transmission over coupled-core multicore fibers. The WDM DP-QPSK signals were transmitted over 7,200-km coupled-core four-core fibers and demodulated by real-time MIMO DSP. We also show the first real-time QAM transmission over coupled-core four-core fibers.
12028-4
Author(s): Ruben S. Luís, Benjamin J. Puttnam, Georg Rademacher, NICT (Japan); Ton Koonen, Eindhoven University of Technology (Netherlands); Satoshi Shinada, Yoshinari Awaji, NICT (Japan); Chigo Okonkwo, Eindhoven University of Technology (Netherlands); Hideaki Furukawa, NICT (Japan)
Show Abstract + Hide Abstract
The use of general purpose graphics processing unit for real-time digital signal processing of optical signals for long distance transmission is demonstrated. We show an implementation of the Kramers-Kronig coherent receiver capable of processing 1GBaud 4-, 8-, 16-, 32-, and 64-QAM minimum phase signals. We evaluate a 91km field trial link as well as a straight-line 10000km link with multiple modulation formats. We discuss the real-time implementation as well as its long term stability. Finally, we discuss future applications of this technology. In particular for dedicated long distance communications between data centers.
Session 2: Long-Haul Transmission and AI Networking II
Session Chair: Guifang Li, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
12028-5
Author(s): Ming-Fang Huang, NEC Labs America Inc (United States)
12028-6
Author(s): Fatih Yaman, NEC Labs America Inc (United States)
Show Abstract + Hide Abstract
Digital compensation of nonlinear transmission impairments is one of the most practical ways to reduce cost per bit post installment. Artificial neural networks are effective in compensating nonlinear impairments and practical as they only require training data rather than detailed system information. However, they require significant resources and power consumption when implemented in ASIC. Moreover, the requirements increase sharply with increasing baud-rates which is one of the surest ways to reduce transponder costs. Photonic neural networks on the other hand have a much shallower dependence on the baud-rate and are shown to be capable of implementing neural-network based nonlinearity compensation.
Session 3: Novel Fibers and Amplifiers I
Session Chair: Ruomei Mu, TE SubCom (United States)
12028-12
Author(s): Hesham Sakr, Thomas Bradley, Gregory Jasion, Eric Rodrigue Numkam Fokoua, Optoelectronics Research Ctr. (United Kingdom); Seyed Reza Sandoghchi, Lumenisity (United Kingdom); Ian A. Davidson, Austin Taranta, Gianluca Guerra, William Shere, Yong Chen, John R. Hayes, David J. Richardson, Francesco Poletti, Optoelectronics Research Ctr. (United Kingdom)
Show Abstract + Hide Abstract
Silica glass optical fibers have revolutionized data transmission, sensing and laser development over the past 50 years. Moreover, dielectric waveguides with a hollow core offer exciting development possibilities beyond traditional technology. Hollow Core Optical Fibers (HCFs) have been fabricated over the past 20 years with various geometries and refinements, yet their attenuation has remained significantly higher than can be routinely achieved in standard silica single mode fibers. Here we present recent developments in Nested Anti-resonant Nodeless Fiber (NANF) design over the last few years and show how this rapidly developing technology has been refined to produce state of the art HCFs at wavelengths between 850 – 1625 nm.
12028-13
Author(s): kazunori MUKASA, Furukawa Electric Co., Ltd. (Japan)
Show Abstract + Hide Abstract
New optical fibers to improve the space efficiency for high-density space division multiplexing transmissions are strongly required. From the viewpoint of simplicity from fiber properties measurements to system configurations, uncoupled multi-core fiber (MCF) is very desirable. However, low cross-talk properties required for uncoupled MCFs are trade-off relationship with space efficiencies, in general. We have investigated to improve the space efficiency of the uncoupled MCFs by increasing the number of cores. Of course, increasing core numbers require additional challenges from fiber designs to fiber fabrications. We will introduce our recent research results on these investigations.
12028-14
Author(s): Maroun BSAIBES, Stephane Plus, Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers, Atomes et Molécules, F-59000 Lille (France); Guillaume Labroille, Cailabs, 38 Boulevard Albert 1er, 35200 Rennes (France); Pierre Sillard, Prysmian Group, Parc des Industries Artois Flandres, 644 boulevard Est, Billy Berclau, 62092 Haisnes (France); Laurent Bigot, Univ. Lille, CNRS, UMR 8523 - PhLAM - Physique des Lasers, Atomes et Molécules, F-59000 Lille (France)
Show Abstract + Hide Abstract
In our work, we propose two methods where we have successfully quantified the Rayleigh and SALS contribution to the DMA and total loss of each mode of two weakly coupled FMFs with different index profiles (step and trapezoidal) supporting 6-LP modes, without knowledge of the dopants or the fabrication process. One by analyzing the angular distribution of the light scattering of each mode of the fibers, and another based on a theoretical approach where we spliced the two fibers and performed bidirectional OTDR measurements at several wavelengths to compare the Rayleigh scattering of the same mode propagating in different FMFs.
12028-7
Author(s): Lijie Hou, College of Precision Instrument and Opto-Electronic Engineering, Tianjin University (China), College of Science, North University of China (China); Zhiqun Yang, School of Precision Instruments and Optoelectronics Engineering,Tianjin Universityent (China); Linbo Yang, Yaping Liu, Lin Zhang, School of Precision Instruments and Optoelectronics Engineering,Tianjin University (China)
12028-8
Author(s): Yoko Yamashita, Takashi Matsui, Kazuhide Nakajima, NTT - Tsukuba R&D Ctr (Japan)
Show Abstract + Hide Abstract
We propose a wavelength and power tunable in-fiber optical tap composed of a long-period fiber grating (LPG) and an asymmetric tap waveguide inscribed in a two-mode fiber by using a femtosecond laser. By properly designing the LPG and tap waveguide, the transmitted LP01 mode is converted into the LP11 mode. The converted LP11 mode is coupled to the tap waveguide written toward the side of the fiber with variable wavelength and branching power ratio and then detected at the side of the fiber. The validity of our proposed concept was investigated with a fabricated sample.
Session 4: Novel Fibers and Amplifiers II
Session Chair: Ruomei Mu, TE SubCom (United States)
12028-9
Author(s): Peter A. Andrekson, Zhichao Ye, Magnus Karlsson, Victor Torres-Company, Chalmers University of Technology (Sweden)
Show Abstract + Hide Abstract
Parametric amplifiers, relying on a nonlinear material to create amplification, are promising as they can amplify light without generating excess noise. Here, we will discuss our recent demonstration of continuous wave parametric amplification, in both phase-insensitive and phase-sensitive mode, based on the 3rd order nonlinearity in a monolithic, compact, spiral-shaped silicon-nitride waveguide. We observe an on-chip gain of up to about 10 dB with a noise figure of 1.2 dB, i.e., well below the conventional amplifier quantum-limited noise figure of 3 dB. Our results show the potential for realizing continuous-wave parametric amplification that can enable applications in optical communications, signal processing and quantum optics across a wide range of frequencies.
12028-10
Author(s): Hirotaka Ono, Shonan Institute of Technology (Japan); Makoto Yamada, Osaka Prefecture University (Japan)
Show Abstract + Hide Abstract
We propose a simultaneous C- and L-band amplification by using a single two-core double-clad erbium-doped fiber (EDF). The parameters of the two cores are optimized so that one core is used for C-band amplification and the other core is suitable for L-band amplification. Simulation results reveal that the two-core optical amplifier with the double-clad EDF has potential of over 20-dB gain in both C- and L-bands as well as the best cladding-pumping wavelength is in the 1480-nm band.
12028-11
Author(s): Charles Matte-Breton, Younès Messaddeq, Université Laval (Canada)
Show Abstract + Hide Abstract
In this paper, we demonstrate that a carefully engineered combination of erbium doped layers and erbium-ytterbium codoped layers in a single core (concentric layers with heterogeneous doping) can improve the power conversion efficiency (PCE) compared to homogeneous doping designs. We compare the PCE and noise figure (NF) of four types of homogeneous doping geometries in the core (annular Er, annular Er/Yb, central Er and central Er/Yb) with a design based on concentric layers with heterogeneous doping. For all the scenarios, the doping geometry and fiber length are carefully optimized to maximize the PCE.
Optical Communications Awards and Panel Discussion on Integrated Photonics
Session Chairs: Spiros Mikroulis, SMART Photonics (Netherlands); Benjamin B. Dingel, Nasfine Photonics, Inc. (United States); Guifang Li, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States); Kazuhide Nakajima, NTT - Tsukuba R&D Ctr. (Japan), Atul Srivastava, NTT Electronics America, Inc. (United States), Roberto Llorente, Univ. Politècnica de València, (Spain), Madeleine Glick, Columbia Univ., (United States)

8:30 AM: Introduction to the Optical Communication Track (Benjamin Dingel)
8.35 AM: Best Paper Awards Announcement; NTT/Corning sponsors presentation (Atul Srivastava, Ming-Jun Li)
8:45 AM: Panelists Presentation Summaries (Introduction); Q&A (Guigang Li, Kazuhide Nakajima)

9:05 AM: Panel Discussion on Integrated Photonics: A Key Enabler Driving Advances in Communications, Monolithic, and Hybrid Integration Solutions: Challenges and Opportunities

Moderator:
Spiros Mikroulis

Panelists:
To be determined

How can we address the increased demand to higher baud rates and scale in volume while driving the costs down? We need combinations of technologies to cope with these challenges, what are the sweet spots for each and where do they meet. How to combine the best of both worlds? Join us as we explore this and dive deep into other issues surrounding this question.

9:45 AM Live Q&A with audience, summary, and closing remarks (Madeleine Glick).
Session 5: Free Space and Underwater Optics
Session Chair: Bardia Pezeshki, AvicenaTech Corp. (United States)
12028-15
Author(s): Jae-Young Choi, Sang-Kook Han, yonsei university (Korea, Republic of)
Show Abstract + Hide Abstract
In this paper, an adaptive multi-level symbol detection technique was proposed to enhance receiver performance in free-space optical communications. Owing to the slow varying characteristic of scintillation, an adaptive linear prediction (ALP) filter is used to predict the channel state information (CSI) of the upcoming frame. A Mach-Zehnder modulator (MZM) based channel emulator was used to emulate the turbulence-induced scintillation, experimentally. The proof-of-concept experiment demonstrated that the proposed technique showed better transmission performance than that of the maximum likelihood (ML) based fixed threshold detection technique.
12028-16
Author(s): Antonio Vanzo, CNR-IFN Padova (Italy); Tommaso Furieri, University of Padova (Italy); Stefano Bonora, CNR-IFN Padova (Italy)
Show Abstract + Hide Abstract
Free-space optical communication systems always require a precise focusing on the receiver. Unfortunately, atmospheric turbulence causes scintillation at the coupling at the receiver. For receivers with small aperture (50mm) the main aberration is tip/tilt and its correction is of fundamental importance for high bandwidth data transmission. We present a new concept of Fast Steering Lens for the correction of tip and tilt which permits a more compact and simpler system than a fast steering mirror. The entire setup has been tested in a 200m outdoor transmission with promising results.
12028-17
Author(s): Alexandra L. Latshaw, Rick Kendrick, Raytheon Intelligence & Space (United States)
Show Abstract + Hide Abstract
Raytheon Intelligence & Space (RIS) in El Segundo, CA is currently developing photonic integrated circuit devices for the improved efficiency of photonics-based optical phased arrays (OPAs). The OPAs will serve as coherent transmit and receive terminals for high data rate, high bandwidth, free-space laser communication. Devices under development include spiral delay lines, multi-node nano-antenna transmit/receive elements, improved fill factor nano-antenna fields as well as unique OPA architectures. The goal of this design effort is to improve the data rate/scalability and range of OPA laser communication systems. This paper presents device design characteristics, predicted performance and experimental results from fabricated devices.
12028-18
Author(s): Sanjeev Kumar Raghuwanshi, Indian Institute of Technology Indian School of Mines Dhanbad (India); RITESH KUMAR, Indian Institute of Technology Indian School of Mines Dhanbad (India), MADAN MOHAN MALAVIYA UNIVERSITY OF TECHNOLOGY (India)
Show Abstract + Hide Abstract
Phase and delay characteristics of various fiber Bragg gratings (FBGs) are explored for beam steering application. Most common FBGs involved in the analysis are, phase shifted, superstructure, tilted, and chirped FBG. The parameters of the analysis involve effect of apodization, grating lengths, chirp bandwidth, and modulation depth of refractive index. These discussions are much useful for the selection of proper FBG in a specific application. The effect of phase and delay response of FBGs on the array factor of PAA is investigated. The obtained results have been used in beam steering for different wavelengths of carrier signal and modulating frequencies of RF signals. To show the squint free beam steering, FBG is implemented in a microwave photonic link which forms an optical beamforming network. In the microwave photonic link, double sideband as well as single sideband modulation has performed on the carrier signal to see the individual response on beam steering.
12028-19
Author(s): Sanjeev Kumar Raghuwanshi, Indian Institute of Technology Indian School of Mines Dhanbad (India)
Show Abstract + Hide Abstract
In the relatively young subject of microwave photonics (MWP), photonic technologies are used to increase microwave capabilities that are difficult to obtain directly in the microwave realm. A variety of photonic devices have been used to achieve these functionalities and provide wider beam steering without the beam squinting effect. This study investigates a microwave photonic Beam Steering System for a 2.4 GHz RF signal employing a 3X3 linear phased array antenna constructed in the S-band and operating at 2.4 GHz. As a part of the proposed design, the RF signal is guided by an optical beam-forming network with actual time delay. Multiple lengths of extremely dispersive speciality fibres are used in the optical beam forming network. The reflection properties of PS-FBGs with different bandwidths are investigated. Theoretical analysis and experimental results were used to determine the time delay response and reflectivity of PS-FBG and dispersive fibre elements. Using theoretical and pra
12028-20
Author(s): Yangchun Li, Danial Chitnis, University of Edinburgh (United Kingdom)
Show Abstract + Hide Abstract
Silicon photomultipliers (SiPMs) are photon-counting detectors based on single-photon avalanche diodes which have the potential to detect single photons in the visible spectrum. In this paper, we present an embedded real-time communication system based on the Xilinx Zynq-7000 FPGA platform with a 1mm-sq SiPM demonstrating the full potential of low power single-photon communication. The experimental results show that the implemented real-time system archives a Bit Error Rate (BER) smaller than 10-3 with 1.1nW of incident optical power at 100Kbps. In addition, the SNR calculation under different optical power is compared to the theoretical SNR to demonstrate the system’s dynamic range.
12028-21
Author(s): Yujian Guo, Meiwei Kong, Mohammed Sait, Tien Khee Ng, Boon Siew Ooi, King Abdullah Univ of Science and Technology (Saudi Arabia)
Show Abstract + Hide Abstract
We report a large-area scintillating-fiber-based UWOC system to overcome the PAT issue and underwater turbulence. The 3-dB bandwidth of the system is 66.62 MHz, and the achieved data rate is 250 Mbit/s under different turbulence conditions over a 1.5-m underwater channel. To verify the robustness of the system, four types of turbulences were emulated: presence of air bubbles, temperature, salinity, and turbidity. The fiber-based UWOC system achieved omnidirectional data detection and works under turbulences with 0% outage percentage. This work demonstrates a new way of designing detector in UWOC and shed light on practical UWOC system operation in real scenarios.
12028-22
Author(s): Meiwei Kong, Yujian Guo, Mohammed Sait, Omar Alkhazragi, Chun Hong Kang, Tien khee Ng, Boon S. Ooi, King Abdullah Univ of Science and Technology (Saudi Arabia)
Show Abstract + Hide Abstract
An underwater optical wireless sensor network prototype consisting of two sensor nodes and an optical hub is developed for the first time to implement real-time underwater environmental monitoring in this work. In a laboratory testbed and a field trial conducted in an outdoor diving pool, the sensor nodes can transmit the collected information (temperature, salinity, conductivity and pH) to the base station through the optical hub with 100% packet success rates over a transmission distance of 60 cm. This work is the first step toward the future implementation of real-time underwater mobile sensor networks and the underwater Internet of Things.
Show Abstract + Hide Abstract
We demonstrate a near-omnidirectional optical antenna that utilizes wavelength-division multiplexing to increase the throughput. We demonstrate the optimal selection of wavelengths based on the fibers’ characteristics. In addition, we report on two ways of mitigating the crosstalk between the two signals using passive optical elements and a software-based zero-forcing equalizer. A net data rate of 1.4-Gb/s was achieved using non-return-to-zero on-off keying modulation. Our proof-of-concept work can develop large-area detection and near-omnidirectional optical transceiver for applications such as water-to-air light-based communication.
Session 6: Short Reach and Optical Devices I
Session Chair: Kazuhide Nakajima, NTT - Tsukuba R&D Ctr. (Japan)
12028-24
Author(s): Ming Tang, Huazhong Univ of Science And Technology (China)
Show Abstract + Hide Abstract
Next-generation data centre networks (DCNs) will likely demand per-carrier interface rates beyond 100 Gb/s to achieve the 800 Gb/s (even 1.6 Tb/s) after 2022, putting severe pressures to intensity modulation with direct detection (IM-DD). The coherent technology with high performance digital signal processing (DSP) has been proposed as a promising candidate. However, it is still widely regarded as too expensive and power hangry for DCN owing to the demand for narrow-linewidth lasers and complex DSP algorithms. In this talk, we will review recent progress on coherent technologies in short reach, including various simplified algorithm approaches. Special emphasis will be given to the self-homodyne coherent transmission with the aid of active polarization tracking enabled receiver. It has been demonstrated that significant complexity reduction (in power consumption and DSP module) can be achieved while keeping the spectral efficiency, both in offline and real-time high-speed experiments.
12028-25
Author(s): Tobias Kippenberg, École polytechnique fédérale de Lausanne (Switzerland)
12028-26
Author(s): Bardia Pezeshki, AvicenaTech Corp. (United States)
Show Abstract + Hide Abstract
We describe multi Gb/s NRZ modulation of LEDs at low current densities (~30A/cm^2). These structures exhibit extremely short carrier lifetime, but with high radiative efficiency. Coupled to large lateral silicon photodetectors, one can obtain high speed optical lanes in a very simple and low-cost topology over a large environmental temperature range of -40C to 150C.
Session 7: Short Reach and Optical Devices II
Session Chair: Kazuhide Nakajima, NTT - Tsukuba R&D Ctr. (Japan)
12028-27
Author(s): Kazuya Nagashima, Furukawa Electric Co., Ltd. (Japan)
Show Abstract + Hide Abstract
Small coherent optical transceivers are demanded in metro-area networks and data-center interconnects. Accordingly, required mechanical dimensions of optical components are shrinking. We present two types of highly-integrated optical modules for >400-Gb/s coherent optical links. Our developed wavelength-tunable laser module consists of an ultra-compact DBR/Ring laser chip and PLC-based wavelength locker. The laser module covers the full C-band with narrow linewidth of <100 kHz and fiber output power above 17 dBm. Furthermore, we demonstrate a tiny transmitter-receiver optical sub-assembly that integrates all required optical components according to the Optical Internetworking Forum specifications. The achieved electro-optical and optical-electro bandwidths are >40 GHz.
12028-28
Author(s): RITESH KUMAR, Indian Institute of Technology Indian School of Mines Dhanbad (India), MADAN MOHAN MALAVIYA UNIVERSITY OF TECHNOLOGY (India); Sanjeev Kumar Raghuwanshi, Indian Institute of Technology Indian School of Mines Dhanbad (India)
Show Abstract + Hide Abstract
In the proposed work, multiband reflection characteristics of CFBG have explored for different apodization. The multiband reflection bandwidth has a linear delay and phase response with respect to the operating wavelength. It is analogous to a linear time invariant system forming a microwave photonic filter with multiple pass bands. Presence of ripples in reflection and delay characteristics of CFBG is investigated with various apodization function. The proposed microwave photonic filter is useful for optical processing of light wave. Finally, the proposed MPF is used along with delay elements for the pulse shaping of optical signal. Generation of a triangular shaped waveform is proposed for different length of dispersive fiber, where dispersive element acts as a delay element.
12028-29
Author(s): Karanveer Singh, Jansoch Meier, Arijit Misra, Stefan Preussler, Thomas Schneider, TU Braunschweig (Germany)
Show Abstract + Hide Abstract
We present a theoretical validation of a photonic arbitrary waveform generation concept suited for overcoming the bandwidth limitations of a modulator and its driving signal to generate high-speed signals. Along with a complete mathematical proof for the concept of Nyquist pulse sequences and time-domain interleaving based AWG, a proof-of-concept experiment with an integrated silicon modulator on the BiCMOS platform is demonstrated. With an employed electro-optic bandwidth of 10 GHz, a sampling rate of 30 GS/s is achieved and bandwidth limited arbitrary waveforms are generated.
12028-30
Author(s): Karanveer Singh, Arijit Misra, Stefan Preussler, Thomas Schneider, TU Braunschweig (Germany)
Show Abstract + Hide Abstract
We present a jitter and ENOB analysis for a photonic based digital-to-analog converter (DAC) which is based on time-domain interleaving and Nyquist pulse synthesis. An investigation about the effects of the non-idealities of the generated pulses on the maximum possible resolution and analog bandwidth of the DAC is presented as well. We have analyzed the ENOB value of such photonic DAC and will show that it outperforms commercially available electronic systems. An ENOB value of more than 8 for an analog bandwidth greater than 100 GHz can be achieved.
Posters-Wednesday
In person: 26 January 2022 • 6:00 PM - 8:00 PM
Conference attendees are invited to attend the OPTO poster session on Wednesday evening. Come view the posters, enjoy light refreshments, ask questions, and network with colleagues in your field.

Poster Setup: Wednesday 10:00 AM – 5:00 PM
View poster presentation guidelines and set-up instructions at
https://spie.org/PW/Poster-Guidelines
12028-31
Author(s): Tommaso Furieri, Univ. degli Studi di Padova (Italy), IFN CNR Padova (Italy)
Show Abstract + Hide Abstract
Adaptive Optics is playing a fundamental role in correcting for turbulence induced aberrations. Usually, an AO setup is composed of a Deformable Mirror a Wavefront Sensor and can correct only a small patch of the FoV. To tackle this limitation multiple DM’s and WFS’s are used in order to provide a wider corrected patch at the expense of system complexity. We instead propose to use a stack of multi actuator adaptive lenses in order to be able to correct aberrations in a wider FoV respect to the Single Conjugated counterpart.
12028-32
Author(s): Ihtesham Khan, Muhammad Umar Masood, Politecnico di Torino (Italy); Enrico Ghillino, Synopsys Inc. (United States); Paolo Bardella, Andrea Carena, Vittorio Curri, Politecnico di Torino (Italy)
Show Abstract + Hide Abstract
We propose a Machine Learning based solution for the calculation of optimal the control state in Beneš networks: for a given topology we deterministically calculate all the control states (CSs) allowing for the requested permutation and, using a pre-trained neural network, we estimate for each CS the associated OSNR at each output port, finally selecting the CS allowing for the optimal overall OSNR. We applied this approach to an 8x8 network, with 20 Mach-Zender based crossbar switches, and trained the network with a data set of 3000 OSNRs estimated for random combinations of the CSs using Synopsys Optsim.
12028-33
Author(s): Kai-Chieh Chang, Graduate Institute of Photonics and Optoelectronics, National Taiwan University (Taiwan); Charles Tu, Department of Electronic Engineering, National Chung Hsing University (Taiwan); Sheng-Lung Huang, Graduate Institute of Photonics and Optoelectronics, National Taiwan University (Taiwan); Wood-Hi Cheng, Graduate Institute of Optoelectronic Engineering, National Chung Hsing University (Taiwan)
Show Abstract + Hide Abstract
We demonstrate higher gain in a smaller core diameter of 15-µm for 300-nm broadband single-mode Cr-doped crystalline core fiber (SMCDCCF) fabricated by a novel forecast-auxiliary-line assistance growth. The novelty of high gain is due to coupling efficiency (CE) and pump to signal conversion efficiency (PSCE) improvements. Comparison with the core of the 25-µm SMCDCCF, the CE, PSCE, and gain efficiency of the 15-µm SMCDCCF are increased by 3.5, 3.3, and 1.3 times, respectively. Further study on higher gain over 10-dB by developing long fiber length of the 15-µm SMCDCCFs will be presented for use in the next-generation broadband fiber amplifiers.
Conference Chair
CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Conference Chair
Kazuhide Nakajima
NTT - Tsukuba R&D Ctr. (Japan)
Program Committee
OFS Fitel LLC (United States)
Program Committee
TE Connectivity Ltd. (United States)
Program Committee
Ezra Ip
NEC Labs. America, Inc. (United States)
Program Committee
Optoelectronics Research Ctr. (United Kingdom)
Program Committee
Osaka Univ. (Japan)
Program Committee
Corning Incorporated (United States)
Program Committee
Chao Lu
The Hong Kong Polytechnic Univ. (Hong Kong, China)
Program Committee
Osaka Univ. (Japan)
Program Committee
Innovation Core SEI, Inc. (United States)
Program Committee
Univ. of Bristol (United Kingdom)
Program Committee
Google (United States)
Program Committee
Yanjun Zhu
Hisense Broadband, Inc. (United States)
Additional Information