23 August 2016 Flexible tunable optical transceiver based on field-programmable gate array for time and wavelength-division multiplexed passive optical network systems
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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.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Sheng Hu, Yonglin Yu, Cheng Li, Yao Zhu, Yu Han, "Flexible tunable optical transceiver based on field-programmable gate array for time and wavelength-division multiplexed passive optical network systems," Optical Engineering 55(8), 086110 (23 August 2016). https://doi.org/10.1117/1.OE.55.8.086110 . Submission:
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