상세정보
학술지
Cost-effective 400-Gbps Micro-intradyne Coherent Receiver using Optical Butt-coupling and FPCB Wirings
- 발행일
- 201810
- 출처
- Optics Express, v.26 no.22, pp.28453-28460
- ISSN
- 1094-4087
- 출판사
- Optical Society of America(OSA)
- 협약과제
- 18HB4300, 파장당 400G 이상의 차세대 광전달망 소자·부품 개발, 김종회
- 초록
- We present a cost-effective and bandwidth-enhanced 64-Gbaud micro-intradyne coherent receiver based on hybrid integration of InP waveguide-photodetector (WG-PD) and silica planar lightwave circuit (PLC). InP waveguide-photodetector (WG-PD) arrays are simply chip-to-chip bonded and optically butt-coupled to a silica-based dual-polarization optical hybrid chip. Multiple flexible printed circuit boards are adapted for electrical RF and DC wirings, which provide low-cost integration and good RF performance of the receiver. A 3-dB bandwidth of the fabricated coherent receiver is extended to ~36 GHz by optimization of bondwire inductance between the WG-PD array and the transimpedance amplifier (TIA), even when commercial TIAs with a typical bandwidth of ~29 GHz are used. Through optimization of the silica hybrid integrated coherent receiver, 64-Gbaud DP-16QAM signal transmission over 1050-km standard single-mode fiber is successfully demonstrated below a bit error rate of 2 × 10-3. This is the threshold for a soft decision-based forward error correction, at the optical signal to noise ratio of 23.8 dB.
- KSP 제안 키워드
- 3-dB bandwidth, 6 GHz, Bit Error Rate(And BER), Coherent receiver, DP-16QAM, Dual-polarization, Flexible Printed Circuit, Forward error correction(FEC), Hybrid Integration, Low-cost, Optical Signal-To-Noise Ratio(OSNR)