Lasers, Fiber Optics, and Communications

Flexible tunable optical transceiver based on field-programmable gate array for time and wavelength-division multiplexed passive optical network systems

[+] Author Affiliations
Sheng Hu, Yonglin Yu, Cheng Li, Yao Zhu

Huazhong University of Science and Technology, Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Luoyu Road 1037, Wuhan 430074, China

Yu Han

Wuhan Huagong Genuine Optics Tech Co., Ltd. (HG Genuine), HUST Science & Tech Park, East Lake Hi-Tech Zone, Wuhan 430073, China

Opt. Eng. 55(8), 086110 (Aug 23, 2016). doi:10.1117/1.OE.55.8.086110
History: Received April 28, 2016; Accepted August 2, 2016
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Abstract.  Time- and wavelength-division multiplexed passive optical networks (TWDM-PONs) have been selected by the full services access network community as the most suitable technology for next-generation optical access networks. A key technology in TWDM-PON is the colorless optical network unit transceiver. This paper proposes a flexible, tunable optical transceiver that uses directly modulated tunable lasers. Using a field-programmable gate array (FPGA), programmable reconfigurations and testing capabilities can be embedded into the transceiver in order to implement wavelength control, signal generation, pre-emphasis for upstream, and a bit error rate (BER) test for the downstream. To ensure high-quality signal generation at different bitrates, impedance matching between the laser driver circuit and the laser diodes is optimized. Using the proposed transceiver, three-section-distributed Bragg reflector tunable lasers at or below 2.5  Gb/s direct modulation through a 40-km standard mode fiber transmission were successfully implemented.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Sheng Hu ; Yonglin Yu ; Cheng Li ; Yao Zhu and Yu Han
"Flexible tunable optical transceiver based on field-programmable gate array for time and wavelength-division multiplexed passive optical network systems", Opt. Eng. 55(8), 086110 (Aug 23, 2016). ; http://dx.doi.org/10.1117/1.OE.55.8.086110


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