상세정보
학술지
1.3-μm and 10-Gbps Tunable DBR-LD for Low-cost Application of WDM-based Mobile Front Haul Networks
- 발행일
- 201909
- 출처
- Optics Express, v.27 no.20, pp.29241-29247
- ISSN
- 1094-4087
- 출판사
- Optical Society of America (OSA)
- 협약과제
- 18HB3300, 이동통신용 O-band Tunable DBR TOSA 개발, 김기수
- 초록
- We report a 1.3-쨉m and 10-Gbps tunable distributed Bragg reflector laser diode (DBR-LD) for the low-cost application of a wavelength division multiplex based mobile front-haul network. The device consists of gain, phase control, and DBR sections, implemented using a butt-coupling method through a monolithic integration and through the introduction of an etched mesa planar buried hetero-structure in a waveguide structure. From the work, a 560-쨉m long DBR-LD with a 220-쨉m long micro-heater DBR section has a threshold current of 10 mA 짹 1 mA and a tuning range of more than 15 nm within a heater injection current of ~100 mA. Spectral and dynamic tests for this LD show 16 channels spaced a wavelength grid of 0.8 nm with a side mode suppression ratio of greater 40 dB and clear eye openings with a dynamic extinction ratio of over 5.4 dB at an operating current of 60 mA.
- KSP 제안 키워드
- 5 nm, Coupling method, Distributed Bragg reflector laser, Dynamic test, Injection current, Laser diode(LD), Low-cost, Micro-heater, Monolithic Integration, Phase control, Threshold current