Chen Jing-Heng, Hsieh Po-Jen, Lin Jiun-You, Su Der-Chin
Opt Express. 2004 Dec 27;12(26):6553-8. doi: 10.1364/opex.12.006553.
Based on the flexibilities of light beam propagation in three dimensions, we propose an improved N-port optical quasi-circulator by using a pair of orthogonal holographic spatial- and polarization- modules. All optical elements are located in parallel planes that are perpendicular to the optical axis. The number of optical elements is decreased, and a higher performance optical quasi-circulator without crosstalk and polarization mode dispersion can be easily achieved. A prototype of 5-port polarizationindependent optical quasi-circulator operating at a wavelength of 1300nm was assembled and tested to show its validities.
