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Transmission Performance Evaluation of Hybrid Lines Composed of SMF and MMP for FTTx Systems  

Park, Seung-Hyeon (인하대학교 정보통신대학원 통신네트워크 연구실)
Kim, Kyong-Hon (인하대학교 물리학과)
Lee, El-Hang (인하대학교 정보통신대학원 통신네트워크 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.7A, 2005 , pp. 535-541 More about this Journal
Abstract
This paper proposes a hybrid optical lines composed of single-mode fiber(SMF) and multi-mode fiber(MMF) for gigabit-capable Passive Optical Network(GPON) using a WDM method with a single light source per each channel, and reports the results of transmission performance the proposed lines. The transmission link uses a direct modulated DFB-LD for high speed downstreams at the optical line terminal(OLT) of central office(CO) and a low cost SFP type transceiver for low-speed upstream in optical network unit(ONU). To split or combine the transmission channels, wavelength MUX/DEMUX are used in the optical line section, and MMFs not longer than 1 km are attached to the SMF lines at the ONU side of the WDM-PON links. We have performed the transmission experiment on the downstream of 2.5 Gbit/s, and 1.25 Gbit/s, and the upstream of 1.25 Gbit/s, and 622 Mbit/s which are recommended by ITU-T G.984.2. The transmission margin and feasibility of the proposed links have been tested to be suitable up to 2.5 Gbit/s transmission.
Keywords
FTTH; WDM-PON; SMF; MMF; DFB-LD;
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