Variable light controlling device and variable light...

Details Variable light controlling device and variable light... Variable light controlling device and variable light...

G - Physics

02

F

G02F 1/01 (2006.01) G02F 2/00 (2006.01) H04B 10/02 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2579274

A variable light controlling device comprising a substrate, an optical waveguide disposed on the substrate, a first heater and a second heater to change the optical waveguide's temperature is fabricated. And a total amount of the power supplied to the first and the second heater, or a total amount of heat emitted from both of the first and second heater, is maintained substantially constant. Then, the substrate is protected from temperature changes, thereby, stable and quick wavelength tuning operations are realized.

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