Mmi thermo-optic coupler

Details Mmi thermo-optic coupler Mmi thermo-optic coupler

G - Physics

02

B

G02B 6/26 (2006.01) G02B 1/04 (2006.01) G02B 6/122 (2006.01) G02B 6/125 (2006.01) G02B 6/28 (2006.01) G02B 6/34 (2006.01) G02B 6/35 (2006.01) G02B 6/12 (2006.01)

Patent

CA 2306325

A multi-mode interference coupler is disclosed for coupling light between ports. The MMI coupler is a planar waveguide having a first input port for launching light into a core of the planar waveguide which has first refractive index n1. The waveguide is dimensioned to have a response that confines light launched therein to a single mode in one dimension, and multi-mode in another dimension. Two other ports are provided for receiving light launched into and propagating through the core from the input port. A polymer cladding of a second material having a refractive index n2 covers at least a portion of the core. A heater is provided and is thermally coupled to the cladding for heating the cladding when a control signal is applied.

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