Design of 4-Channel × 25-Gbps Optical Transceiver Using Polymer Waveguide on Flexible Printed Circuit Board

• Main Authors: Chih-Hao Chang, 張智皓
• Other Authors: Mount-Learn Wu
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/959x74

碩士 === 國立中央大學 === 光電科學與工程學系 === 104 === In this thesis, we proposed the design of 4-channel  25-Gbps optical transceiver using polymer waveguide on a flexible printed circuit board (FPC), where the 45˚ micro-reflector, VCSEL, PD, receiver IC and transmitter IC are integrated on the flexible printed circuit board to demonstrate the high-speed optical interconnects. The simulation result of maximum optical coupling efficiency is around 73.5 % from the VCSEL to 50-μm-core MMF via polymer waveguide. The simulation result of maximum optical coupling efficiency between MMF and PD via a polymer waveguide is around 51.4 %. The 1-dB alignment tolerances for both VCSEL/PD at the input/output port are larger than ±10 μm. The inter-channel optical crosstalk at both Tx and Rx is smaller than -40 dB. According to the simulation results, S11 and S21 of designed single-ended transmission lines at Tx and Rx is below -15 dB and above -0.4 dB. The S11 and S21 of designed differential-pair transmission lines is below -10 dB and above -2.2 dB at 0 ~ 50-GHz. The initial-design of 25-Gbps differential-pair transmission lines on printed circuit board is proposed. According to the simulation results, S11 and S21 is below -19 dB and above - 0.11 dB at the condition of 0 ~ 40-GHz and 1-mm transmission length.