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Single-Fiber Bidirectional Transmission System Using Base Station Without Light Sources  

전금수 (전북대학교 전자정보공학부 광통신 연구실, 전북대학교 공학연구원 정보통신연구센터 연구원)
정용채 (전북대학교 전자정보공학부 초고주파 회로설계 연구실)
임명섭 (전북대학교 전자정보공학부 초고속 데이터 이동통신 연구실)
반재경 (전북대학교 전자정보공학부 광통신 연구실, 전북대학교 공학연구원 정보통신연구센터 연구원)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.28, no.5A, 2003 , pp. 323-332 More about this Journal
Abstract
We have proposed and implemented a novel cost-effective optical subcarrier mutiplexing transceiver for base station without light sources in which optical signal can be transmitted bidirectionally over a single optical fiber. Modulated optical signal is retransmitted from the base station to the central office using a ring-type base station which consists of a circulator and an Mach-Zehnder modulator, where the optical source is supplied from the central office. In order to investigate the feasibility of the proposed base station without light sources, we have measured adjacent channel power ratio and carrier to noise ratio by transmitting the IS-95 CDMA signal and 14 tones carrier signal bidirectionally through the system.
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