Integrated optical mach zehnder structures

Details Integrated optical mach zehnder structures Integrated optical mach zehnder structures

G - Physics

02

F

G02F 1/225 (2006.01) G02B 6/12 (2006.01) G02F 1/313 (2006.01) G02F 1/01 (2006.01) G02F 1/025 (2006.01)

Patent

CA 2299794

An integrated optical Mach Zehnder structure has an optical path length modifying heater (phase-shifter) associated with a portion of the length of each interference arm of the Mach Zehnder. The portion of the length of the interference arm associated with one of the heaters is flanked with trenches that provide that portion with a temperature coefficient of birefringence different from that of the corresponding portion of the other interference arm. The invention is applicable not only to stand-alone Mach Zehnders, but also to more complex Mach Zehnder structures having a series combination of two or more component Mach Zehnders that are close coupled by having the two outputs of one component Mach Zehnder of the complex structure constitute the two inputs of the next component Mach Zehnder of the complex structure.

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