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학술지 Experimental Demonstration of Wavelength Domain Rogue-Free ONU Based on Wavelength-Pairing for TDM/WDM Optical Access Networks
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저자
이지현, 박혁, 강세경, 이준기, 정환석
발행일
201511
출처
Optics Express, v.23 no.24, pp.31163-31170
ISSN
1094-4087
출판사
Optical Society of America(OSA)
DOI
https://dx.doi.org/10.1364/OE.23.031163
협약과제
15MI1300, SDN 기반 유무선 액세스 통합 광네트워킹 기술, 정환석
초록
In this study, we propose and experimentally demonstrate a wavelength domain rogue-free ONU based on wavelength-pairing of downstream and upstream signals for time/wavelength division-multiplexed optical access networks. The wavelength-pairing tunable filter is aligned to the upstream wavelength channel by aligning it to one of the downstream wavelength channels. Wavelength-pairing is implemented with a compact and cyclic Si-AWG integrated with a Ge-PD. The pairing filter covered four 100 GHz-spaced wavelength channels. The feasibility of the wavelength domain rogue-free operation is investigated by emulating malfunction of the misaligned laser. The wavelength-pairing tunable filter based on the Si- AWG blocks the upstream signal in the non-assigned wavelength channel before data collision with other ONUs.
KSP 제안 키워드
Data collision, Ge-PD, Optical access network, Tunable filters(TFs), experimental demonstration