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Prof. Gong-Ru Lin

Prof. Gong-Ru  Lin


Institute of Photonics and Optoelectronics
Department of Electrical Engineering
National Taiwan University
1, Sec. 4, Roosevelt Rd.
Taipei  10617

tel: +886-2-33663700 ext. 6519
fax: +886-2-33669598
E-mail: grlin@ntu.edu.tw
Web: http://gipo.ntu.edu.tw/eng/e_p6student-5-detail2.php?sn=7&is_manage=0&title_code

Area of Expertise

Mode-Locked Fiber Lasers, Fiber-Optic and Visible-Laser Communications, Group IV Semiconductor 2-D/1-D/0-D Nanostructures and Quantum Dots, Group IV Nonlinear and Nano Photonics, Group IV Semiconductor LEDs and Solar Cells, Saturable Absorbers and Femtosecond Mode-Locking, Injection-Locking and Data Processing in Laser Diode, All-Optical Communication and Data Format Processing in Optical Waveguide


Prof. Gong-Ru Lin leads the Laboratory of Fiber Laser Communications and Silicon Nanophotonics in Graduate Institute of Electro-Optical Engineering and Department of Electrical Engineering, National Taiwan University. Prof. Lin has (co)authored more than 300 papers in SCI-ranked journals and over 500 EI-ranked papers in international conferences. He serves as the steering committee of CLEO-PR and APMP, the technical program committee of OSA Nanophotonics, IEEE OMEMS and Nanophotonics, SPIE Photoics Europe, etc. He has given more than 40 invited talks in international conferences and has been invited as the associate editors of "Journal of Nanomaterials", "Current Nanoscience", and "Journal of Lightwave Technology". He was promoted as a senior member in the Laser and Electro-Optics (LEOS) society of IEEE since 2004, and has been elected as the Fellows of OSA (FOSA) since 2014, SPIE (FSPIE) since 2008, IET (FIET) since 2009, and IOP (FInstP) since 2010. He received twice the Distinguished Research Award from National Science Council Taiwan in 2011 and 2015. He is the Distinguished Professor of National Taiwan University.

Lecture Title(s)

Fiber-Optic and Visible-Laser Communications with Dense-Multiplexing Data Format
Prof. Lin studied the colorless laser diode with weak-resonant Fabry-Perot cavity to serve as an universal optical transmitter for DWDM-PON, and explore the blue laser diode based white-lighting, free-space  and underwater communications. With the use of wavelength injection-locking and dense data multiplexing (such as QAM-OFDM), he implements versatile data link with raw data rate of up to 50 Gbit/s by using a single optical transmitter in one channel to demonstrate very high spectral usage efficiency. This devices are capable of fusion between optical and millimeter-wave carriers toward the coverage of next-generation mobile wireless and fiber wired communication networks. further He also investigates the all-optical data processing (including pulsed switching, wavelength conversion, and format/sign inversion) in optical waveguides made by nano-scale dielectric or semiconductor material with non-stoichiometry. His pioneer work on the QAM-OFDM of blue GaN laser diode up to 9 Gbit/s was selected as a highly cited paper in SCI database.

Group IV Semiconductor Quantum Dots for Linear Optoelectronics and Nonlinear Photonic Processing
Prof. Lin develops versatile specifically synthesized C/Si/Ge nanostructures and related devices in versatile membranes including SiNx/SiOx/SiOxNy and SiCx/SiGex/SiGexCy etc., and employ these materials to fabricate versatile nanodots, nanopyramids and nanopillars for investigating unique novel electrical/physical/optical mechanisms. The targets are to implement Group IV nano and nonlinear photonic devices based on quantum confinement and Kerr nonlinear effects, respectively, and to discuss in more detail the origin of the enhancement on light emission/detection, solar energy conversion, linear and nonlinear absorption/switching and surface plasmonic resonance covering a broadband wavelengths from UV to NIR region. Several featured researches including ultra-low threshold ICP power PECVD synthesis for nano-scale C/Si/Ge structures, and the explorations on versatile photonic devices including LEDs, PVSCs, saturable absorbers and optical waveguides are reported. His recent works on the all-optical wavelength conversion and data format processing in SiOx/SiNx/SiCx waveguide resonators have received abundant interests of collaboration inquiry from international research peers.

Optical-Injection Induced Femtosecond Mode-Locked Fiber Lasers
Prof. Lin is also interested in studying versatile types of femtosecond mode-locked fiber laser schemes for potential applications on ultrafast optoelectronic diagnosis, and high-speed fiber-optic communications, etc. His recent study emphasizes on employing the 2-D topological insulators or the Group IV semiconductor nanostructures as nonlinear saturable absorbers for passively mode-locking Er-doped or Tm-doped fiber lasers. He has constructed several types of continuous-wave and shorted-pulsed Er-/Tm-doped fiber amplifier or semiconductor optical amplifier based fiber ring lasers. In particular, He has theoretically simulated and experimentally established an nonlinear polarization rotation, nonlinear saturable absorption, and optical injection induced passive mode-locking in SOA or EDFA or TDFA based fiber laser cavity, which initiates and compresses the mode-locked pulsewidth down to <50 femtosecond with internal or external soliton process. The other milestones of his works include 29fs passively mode-locked fiber lasers, 40th-order rational harmonic mode-locking of EDFL using a FPLD based mode-locker, mutual injection-locked EDFL/EDFL and FPLD link, tipped fiber based low-splicing-loss fusion technology between different fibers, >10GHz backward optical injection induced cross-gain-modulation for mode-locking, etc. His recent work on the MoS2 based passive mode-locking of EDFL was selected as a highly cited paper in SCI database.

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