Holographic Optical Elements in Optical Communication Networks

• Main Authors: Meng-Fu Lin, 林盟富
• Other Authors: Yang-Tung Huang
• Format: Others
• Language: en_US
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/42006991032236725929

碩士 === 國立交通大學 === 電子研究所 === 82 === Compact, lightweight, and flexible substrate-mode holograms are presented to replace conventional prisms for polarization beamsplitting. These holographic optical elements are applied to various optical communication networks for system improvement. The approaches to implement Benes space-division networks with our substrate-mode holograms will be illustrated. The unique features of these holographic elements eliminate the need of interconnection lines between switching units. The characteristics of these optical interconnection networks are also discussed. Besides, the substrate-mode holograms are used to build N-by-N passive star couplers. Both polarization- dependent and polarization-independent star couplers are presented. The compact polarization-independent 1-by-2 and 2-by-2 optical switches using holograms are also proposed and their application to SONET self-healing rings is demonstrated and discussed.