Title :
Operation Principles for Optical Switches Based on Two Multimode Interference Couplers
Author :
Zhou, Junhe ; Gallion, Philippe
Author_Institution :
Deptartment of Electron. Sci. & Eng., Tongji Univ., Shanghai, China
Abstract :
In this paper, the operation principles for optical switches based on two multimode interference (MMI) couplers are discussed in detail. Based on the analytical expressions of transfer matrix of the MMI couplers, the control mechanism and principles of the two-stage MMI coupler based switch are derived. The device can be controlled by proportionally adjusting the interstage variable phase shifter array. N different switching states can be realized on this device.
Keywords :
light interference; optical couplers; optical phase shifters; optical switches; interstage variable phase shifter array; multimode interference couplers; optical switches; switching states; Arrays; Couplers; Optical switches; Phase shifters; Tuning; Vectors; MMI coupler; optical switch;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2011.2177812
