Low-loss dual-mode optical fiber compensators
First Claim
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1. A spooled length of optical fiber;
- and means for energizing said fiber with an optical signal having a single spacial mode including one or more mode null lines that lie in the plane of the bend of said spooled fiber.
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Abstract
It has been discovered that improved performance and reduced size can be realized in dual-mode fiber dispersion compensators by careful alignment of the mode pattern relative to the plane of the bend of the spooled fiber. In particular, minimum loss occurs when the null line of the LP11 mode lies in the plane of the bend. Arrangements for insuring that the fiber assumes the correct orientation for minimum bending loss are disclosed.
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Citations
9 Claims
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1. A spooled length of optical fiber;
and means for energizing said fiber with an optical signal having a single spacial mode including one or more mode null lines that lie in the plane of the bend of said spooled fiber. - View Dependent Claims (2, 3, 4, 5, 6)
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7. In an optical transmission system including an optical transmitter and an optical receiver connected by means of a first length of single mode optical fiber, a dispersion compensator disposed along said first length of fiber comprising:
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a spooled length of dual mode optical fiber; and a mode converter for converting the mode configuration of any signal propagating along said single mode fiber to an optical signal having a higher order single mode configuration including one or more null lines that lie in the plane of the bend of said spooled length of fiber. - View Dependent Claims (8, 9)
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Specification