Study of bidirectional transmission system using novel four-port interleavers

• Main Authors: Tse-Yu Lin, 林擇雨
• Other Authors: Sien Chi
• Format: Others
• Language: en_US
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/10814870510421217435

碩士 === 國立交通大學 === 光電工程系所 === 94 === Bidirectional transmission over a single fiber link is an appealing architecture. Not only could it reduce the infrastructure -- such as fibers, optical splitters and optical amplifiers -- by a factor two, but it also increases the potential of bandwidth utilization. However, realization of bidirectional amplification and Rayleigh backscattering are the difficulties among bidirectional transmission. Therefore, we proposed a unidirectional amplification scheme which facilitates bidirectional transmission by using an interleaver. In this thesis, the principle and mathematical model of the interleaver are studied first, where the experimental measurement and operations of an interleaver are included as well. In a bidirectional transmission system, we installed two bidirectional transmission systems (i.e., straight line and re-circulating loop configurations) to demonstrate the feasibility of such interleaver-based bidirectional amplifier. Afterward, inspired by the experimental results, we simulated both the loop and the straight line bidirectional transmission systems. All in all, both experimental and simulation results reveal that it is over-optimistic to estimate long distance bi-directional transmission performance using a re-circulating loop.