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학술지 Suppression of Thermal Wavelength Drift in Widely Tunable DS-DBR Laser for Fast Channel-to-Channel Switching
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저자
유상화, 이준기, 김광준
발행일
201711
출처
Optics Express, v.25 no.24, pp.30406-30417
ISSN
1094-4087
출판사
Optical Society of America(OSA)
DOI
https://dx.doi.org/10.1364/OE.25.030406
협약과제
17HH1800, Photonic Frame 기반 패킷 스위칭 가능한 데이터 센터 광 네트워킹 핵심 기술 개발, 김광준
초록
We present a simple and effective method for suppressing thermally induced wavelength drift in a widely tunable digital supermode distributed Bragg reflector (DS-DBR) laser monolithically integrated with a semiconductor optical amplifier (SOA). For fast thermal compensation, pre-compensatory currents are injected into the gain medium section of the DS-DBR laser and the SOA. This method can be easily applied to existing commercial tunable lasers, since it is implemented without any modification to manufacturing process. Experimental results exhibit that wavelength stability is noticeably improved to 짹 0.01 nm. We also experimentally demonstrate a fast channel-to-channel switching in a wavelength-routed optical switching system employing a 90 × 90 arrayed waveguide grating router (AWGR). The measured switching time is less than 0.81 쨉s.
KSP 제안 키워드
Arrayed waveguide grating router, Channel Switching, DBR laser, Distributed Bragg reflector, Gain medium, Manufacturing processes, Optical switching system, Semiconductor optical amplifiers(SOAs), Switching time, Thermal compensation, Thermally induced