Method and device for providing stable and precise optical refer

Details Method and device for providing stable and precise optical refer Method and device for providing stable and precise optical refer

1998-07-20

2000-09-12

Schuberg, Darren

Optical waveguides

With optical coupler

Input/output coupler

385 12, 385135, G02B 634

Patent

active

061189146

ABSTRACT:
A device for providing optical reference signals includes an optical fiber having a reference array formed therein, the array including at least one reference fiber Bragg grating. The array is mounted on a mounting fixture having a low coefficient of thermal expansion. The mounting fixture is in thermal contact with a thermoelectric (TE) element, and a controller controls the temperature of the TE element. A temperature sensor is in thermal contact with the mounting fixture and provides feedback to the controller to control to the temperature of the TE element to thereby maintain the temperature of the mounting fixture at a selected temperature. The other side of the temperature control element is mounting to a heat sink element. The optical fiber is attached to the mounting fixture in a configuration that minimizes any stress or strain in the optical fiber. The array includes a plurality of reference fiber Bragg gratings, and each grating is positioned in the same location on the surface of the mounting fixture. The device may be positioned in an insulating package to further enhance the temperature stability of the mounting fixture and to minimize any temperature variations or gradients in the mounting fixture.

REFERENCES:
patent: 5375181 (1994-12-01), Miller et al.
patent: 5506857 (1996-04-01), Meinzer
patent: 5563973 (1996-10-01), Miller et al.
patent: 5671307 (1997-09-01), Lauzon et al.
patent: 5982582 (1999-04-01), Bao et al.

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