Isothermal thin film heater

Details Isothermal thin film heater Isothermal thin film heater

2006-08-08

2006-08-08

Pak, Sung (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

C385S014000, C385S134000, C219S209000, C219S443100

Reexamination Certificate

active

07088887

ABSTRACT:
Systems and methods for an isothermal thin film heater are provided. The isothermal thin film heater mitigates temperature variations in an optical circuit, such as an arrayed-waveguide grating. The thin film heater comprises a conductive plate and at least one heating element trace coupled to the conductive plate for heating the optical circuit. The heating element trace(s) is arranged around a periphery portion of the conductive plate such that concentric arcs are formed by the heating element trace(s). A sensor for sensing the temperature of the thin film heater and/or the optical circuit can also be provided.

REFERENCES:
patent: 5919383 (1999-07-01), Beguin et al.
patent: 6583388 (2003-06-01), Crafts et al.
patent: 6752531 (2004-06-01), McWilliams
patent: 6757452 (2004-06-01), Shin et al.
patent: 6788870 (2004-09-01), Maxham et al.
patent: 2004/0149718 (2004-08-01), Ito et al.
International Search Report for PCT/US04/43334 dated Nov. 28, 2005.

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