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Proceedings Paper

A 9pJ/bit SOP optical transceiver with 80 Gbps two-way bandwidth
Author(s): Fengman Liu; Baoxia Li; Zhihua Li; Lixi Wan; Wei Gao; Yanbiao Chu; Tianmin Du; Jian Song; Haifei Xiang; Haidong Wang; Kun Yang; Binbin Yang
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Paper Abstract

The high-speed parallel optical transmitter module based on VCSEL/PD array, high-speed specialized integrated circuit, fiber array micro-optical components presents magnificent application and development potential. The coupling alignment between VCSEL/PD array and waveguide array has been reported using silicon optical bench (SiOB) [1-3]. In this paper, A passive coupling method based on SiOB and the packaging of the VCSEL/PD arrays are introduced; the coupling efficiency is about 80% with a misalignment tolerance of +/-15μm, optical cross talk is about -70dB. A silicon optical bench is fabricated as a platform for integrated photonic components. The thermal performance and electrical performance of optical sub-package is analyzed and optimized. A High density SOP Optical Transceiver is designed based on this coupling method. Signal integrity analysis and optimization of the high-density differential signal pairs on PCB is conducted and S parameters are extracted to optimize impedance and minimize the effects of discontinuity in the electrical channels. In addition, to suppress simultaneous switching noise (SSN) and optimize the target impedance, a novel embedded capacitor filter is used instead of the conventional power supply filter, the film capacitor measures 14μm in thickness, has a dielectric constant of 16 and a capacitance density of 1nF/cm2. The transceiver loop back diagram is shown; the bit error rate of the optical transceiver is tested loop back with a 231-1 PRBS pattern and found to be 10-12s-1 at 10Gbps while dissipating 90mW/channel.

Paper Details

Date Published: 14 December 2011
PDF: 5 pages
Proc. SPIE 8309, Optical Transmission Systems, Subsystems, and Technologies IX, 83092I (14 December 2011); doi: 10.1117/12.904197
Show Author Affiliations
Fengman Liu, Institute of Microelectronics (China)
Baoxia Li, Institute of Microelectronics (China)
Zhihua Li, Institute of Microelectronics (China)
Lixi Wan, Institute of Microelectronics (China)
Wei Gao, Institute of Microelectronics (China)
Yanbiao Chu, Institute of Microelectronics (China)
Tianmin Du, Institute of Microelectronics (China)
Jian Song, Institute of Microelectronics (China)
Haifei Xiang, Institute of Microelectronics (China)
Haidong Wang, Institute of Microelectronics (China)
Kun Yang, Institute of Microelectronics (China)
Binbin Yang, Institute of Microelectronics (China)

Published in SPIE Proceedings Vol. 8309:
Optical Transmission Systems, Subsystems, and Technologies IX
Xiang Liu, Editor(s)

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