Method and system for stabilizing fiber grating optical parameters
A system for stabilizing optical parameters of a fiber Bragg grating (FBG) includes a mechanical mount, a heating element coupled to the mechanical mount, and a base plate coupled to the heating element. The base plate comprises a longitudinal groove. The system also includes a fiber anchor coupled to the mechanical mount and a fiber including the FBG mechanically attached to the fiber anchor. The FBG of the fiber is disposed in the longitudinal groove.
1. A system for stabilizing optical parameters of a fiber Bragg grating (FBG), the system comprising:
a mechanical mount;
a heating element coupled to the mechanical mount;
a base plate coupled to the heating element, wherein the base plate comprises a longitudinal groove;
and
a fiber including a first section, a second section opposite to the first section, and the FBG, wherein:
the FBG is disposed between the first section of the fiber and the second section of the fiber;
the first section of the fiber is fixed at a longitudinal position;
the second section of the fiber is free to move; and
the FBG of the fiber is disposed in the longitudinal groove and free to move.
2. The system of claim 1 further comprising a fiber guide coupled to the mechanical mount, wherein the fiber guide comprises a longitudinal channel and the second section of the fiber is disposed in the longitudinal channel.
3. The system of claim 2 further comprising a lubricant compound at least partially surrounding the second section of the fiber disposed in the longitudinal channel.
4. The system of claim 1 further comprising a thermal compound at least partially surrounding the FBG of the fiber.
5. The system of claim 1 further comprising a low friction sheath at least partially surrounding the FBG of the fiber.
6. The system of claim 5 wherein the low friction sheath comprises a graphite wrap.
7. The system of claim 1 wherein the mechanical mount is attached to a housing by shock absorbing members.
8. The system of claim 1 further comprising:
a cover plate coupled to the base plate; and
a thermal sensor coupled to the cover plate.
9. The system of claim 8 wherein the thermal sensor comprises a thermistor embedded in the cover plate.
10. The system of claim 1 wherein the optical parameters comprises a center frequency of the FBG.
11. The system of claim 1 wherein the optical parameters comprises a bandwidth of the FBG.
12. The system of claim 1 further comprising a fiber anchor mechanically attached to the fiber, wherein the first section of the fiber is fixed at the longitudinal position by the fiber anchor.
13. A system for stabilizing optical parameters of a fiber Bragg grating (FBG) section, the system comprising:
a mechanical mount;
a heating element coupled to the mechanical mount;
a base plate coupled to the heating element, wherein the base plate comprises a longitudinal groove;
an optical fiber including a first section, a second section opposite to the first section, and the FBG section, wherein:
the FBG section is disposed between the first section of the optical fiber and the second section of the optical fiber;
the first section of the optical fiber is fixed at a longitudinal position;
the second section of the optical fiber is free to move; and
the FBG section of the optical fiber is disposed in the longitudinal groove and free to move;
a first fiber guide coupled to the mechanical mount, wherein the first fiber guide comprises a first longitudinal channel and the first section of the optical fiber is disposed in the first longitudinal channel; and
a second fiber guide coupled to the mechanical mount, wherein the second fiber guide comprises a second longitudinal channel and the second section of the optical fiber is disposed in the second longitudinal channel.
14. The system of claim 13 further comprising a lubricant compound at least partially surrounding the second section of the optical fiber disposed in the second longitudinal channel.
15. The system of claim 13 further comprising a thermal compound at least partially surrounding the FBG section of the optical fiber.
16. The system of claim 13 further comprising a low friction sheath at least partially surrounding the FBG section of the optical fiber.
17. The system of claim 16 wherein the low friction sheath comprises a graphite wrap.
18. The system of claim 13 wherein the mechanical mount is attached to a housing by shock absorbing members.
19. The system of claim 13 further comprising:
a cover plate coupled to the base plate; and
a thermal sensor coupled to the cover plate.
20. The system of claim 19 wherein the thermal sensor comprises a thermistor embedded in the cover plate.
21. The system of claim 13 further comprising a fiber anchor mechanically attached to the optical fiber, wherein the first section of the optical fiber is fixed at the longitudinal position by the fiber anchor.