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학술지 Self-Wavelength Initialization Method for the Bragg-Grating Based Tunable Light Source in WDM Passive Optical Network
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저자
이지현, 김광옥, 명승일, 이상수, 장윤선
발행일
201112
출처
Optics Express, v.19 no.26, pp.B522-B530
ISSN
1094-4087
출판사
Optical Society of America(OSA)
DOI
https://dx.doi.org/10.1364/OE.19.00B522
협약과제
11VI1400, OFDMA 기반 10Gb/s급 광링크 및 유무선 융합 액세스 네트워크 기술 개발, 명승일
초록
We propose a self-wavelength initialization method for the waveguide Bragg-grating based tunable external cavity laser. Reflection characteristics of the Bragg-grating, and the wavelength routing property in the wavelength division multiplexing-passive optical network (WDM-PON) were used in our proposed method. By adding a cost-effective and low- power broadband light source in the central office, the tunable laser can align its output wavelength with the wavelength at the center of the pass band of the WDM multiplexer. This method can be applicable for the Bragg-grating based tunable laser, which is placed either in the central office or in the subscriber region. The operating principle and the feasibility of the proposed method were described by evaluating the transmission performance. By using our initialization method, a tunable laser with a Bragg-grating can be used as a true colorless light source for the WDM-PON. © 2011 Optical Society of America.
KSP 제안 키워드
Broadband light source(BLS), Central office, Colorless light source, External cavity laser, Low-Power, Pass-band, Reflection characteristics, Tunable lasers, Wavelength Division Multiplexing(WDM), Wavelength-division-multiplexing passive optical network(WDM-PON), cost-effective