Design of dynamic optical circulators

• Main Authors: Wen-pin Huang, 黃文濱
• Other Authors: Jing-Heng Chen
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/96625214613835853766

碩士 === 逢甲大學 === 電機工程所 === 98 === In this thesis, a new type of dynamic optical circulator was proposed. Firstly, based on the operational characteristic of PBS spatial walk-off polarizers and a polarization controller, we proposed a design of 4-port dynamic optical circulator. Then the 4-port optical circulators as a module were stacked to construct a multi-port optical circulator and Porro prisms were introduced for guiding signals between the modules. In order to show the validity of these designs, prototypes of 4-port and 6-port dynamic optical circulators were assembled and were tested by a 632.8 nm He-Ne laser. Their performances were also discussed. These designs except own an operation flexibility of being changeable in transmission direction. They also have advantages of a simple, symmetric, and compact structure, polarization independent, and polarization-mode dispersion resolved. The number of port can also be expanded easily.