BIFILAR OPTICAL FIBER STOWAGE FOR FIBER-OPTIC GYROSCOPE
First Claim
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1. A method of constructing a fiber-optic gyroscope, the method comprising:
- optically coupling first and second optical fibers to an optical path of an interferometer having an outer surface;
coupling at least a portion of the first and second fibers to the outer surface; and
optically coupling the first and second fibers to an optical path of an integrated optics chip (IOC);
wherein coupling at least a portion of the first and second fibers to the outer surface comprises;
orienting a first portion of the first fiber in a first direction relative to the outer surface;
orienting a first portion of the second fiber in a second direction relative to the outer surface and different from the first direction;
orienting a second portion of the first fiber and a second portion of the second fiber such that the second portions of the first and second fibers converge toward one another;
wrapping multiple turns of respective third portions of the first and second fibers around the outer surface in the same direction;
looping a fourth portion of the first fiber and a fourth portion of the second fiber to be oriented in a direction opposite to the direction of the respective third portions; and
orienting a respective fifth portion of the first and second fibers in a substantially sinusoidal configuration along the outer surface.
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Abstract
A method of constructing a fiber-optic gyroscope includes optically coupling first and second optical fibers to an optical path of an interferometer having an outer surface, coupling at least a portion of the first and second fibers to the outer surface, and optically coupling the first and second fibers to an optical path of an integrated optics chip (IOC).
93 Citations
24 Claims
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1. A method of constructing a fiber-optic gyroscope, the method comprising:
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optically coupling first and second optical fibers to an optical path of an interferometer having an outer surface; coupling at least a portion of the first and second fibers to the outer surface; and optically coupling the first and second fibers to an optical path of an integrated optics chip (IOC); wherein coupling at least a portion of the first and second fibers to the outer surface comprises; orienting a first portion of the first fiber in a first direction relative to the outer surface; orienting a first portion of the second fiber in a second direction relative to the outer surface and different from the first direction; orienting a second portion of the first fiber and a second portion of the second fiber such that the second portions of the first and second fibers converge toward one another; wrapping multiple turns of respective third portions of the first and second fibers around the outer surface in the same direction; looping a fourth portion of the first fiber and a fourth portion of the second fiber to be oriented in a direction opposite to the direction of the respective third portions; and orienting a respective fifth portion of the first and second fibers in a substantially sinusoidal configuration along the outer surface. - View Dependent Claims (3, 4, 5, 19, 20, 21)
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2. (canceled)
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6-9. -9. (canceled)
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10. A fiber-optic gyroscope, comprising:
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an interferometer having an optical path and an outer surface; an integrated optics chip (IOC) having an optical path; and first and second optical fibers, at least a portion of the first and second fibers being coupled the to the outer surface, the first and second fibers being optically coupled to the optical paths of the interferometer and IOC; wherein the first and second fibers are coupled to the outer surface such that; a first portion of the first fiber is oriented in a first direction relative to the outer surface; a first portion of the second fiber is oriented in a second direction relative to the outer surface and different from the first direction; a second portion of the first fiber and a second portion of the second fiber are oriented such that the second portions of the first and second fibers converge toward one another; multiple turns of respective third portions of the first and second fibers are wrapped around the outer surface in the same direction; a fourth portion of the first fiber and a fourth portion of the second fiber are looped to be oriented in a direction opposite to the direction of the respective third portions; and a fifth portion of the first fiber and a fifth portion of the second fibers are oriented in a substantially sinusoidal configuration along the outer surface. - View Dependent Claims (12, 13, 14, 22, 23, 24)
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11. (canceled)
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15-18. -18. (canceled)
Specification