Title :
Optical switch based on multimode interference coupler
Author :
Wang, Fan ; Yang, Jianyi ; Chen, Limei ; Jiang, Xiaoqing ; Wang, Minghua
Author_Institution :
Dept. of Inf. Sci., Zhejiang Univ., Hangzhou, China
Abstract :
An optical switch based on the multimode interference (MMI) coupler is demonstrated in this letter. The device is designed and fabricated in polymeric materials and the thermooptic (TO) effect of polymers, which has a negative TO coefficient, is employed to change the self-imaging effect of a side-heated MMI coupler and realize optical switching. The switching power is only 22 mW. The experimental results show that the crosstalk of the switch is about -20 dB at both the cross and bar states.
Keywords :
integrated optics; optical couplers; optical crosstalk; optical design techniques; optical fabrication; optical polymers; optical switches; thermo-optical effects; 22 mW; MMI coupler; crosstalk; multimode interference coupler; optical switch; polymeric materials; self-imaging effect; thermooptic effect; Interference; Optical attenuators; Optical coupling; Optical crosstalk; Optical filters; Optical polymers; Optical refraction; Optical switches; Optical variables control; Optical waveguides; Integrated optics; multimode interference (MMI); optical switch; optical waveguide; polymer; thermooptic (TO) effect;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.863201
