OPTICAL TIME DOMAIN REFLECTOMETRY FOR MULTIPLE SPATIAL MODE FIBERS
First Claim
1. An apparatus comprising:
- an N×
1 spatial mode multiplexer having N input ports and having an output port end-couplable to a multimode optical fiber, the multiplexer being configured to preferentially couple light between individual ones of the input ports and corresponding spatial optical modes of the multimode optical fiber;
an optical source connected to a first one of said input ports to launch an optical probe pulse into the fiber; and
an optical receiver connected to electrically analyze an optical signal backscattered from said multimode optical fiber and output by a second one of the input ports in response to the launch of the optical probe pulse into the fiber.
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Accused Products
Abstract
An apparatus includes an N×1 spatial mode multiplexer, an optical source and an optical receiver. The spatial mode multiplexer has N input ports and an output port end-couplable to a multimode optical fiber. The multiplexer is configured to preferentially couple light between individual ones of the input ports and corresponding spatial optical modes of the multimode optical fiber. The optical source is connected to a first one of the input ports to launch an optical probe pulse into the fiber. The optical receiver is connected to electrically analyze an optical signal backscattered from the multimode optical fiber and output by a second one of the input ports in response to the launch of the optical probe pulse into the fiber.
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Citations
20 Claims
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1. An apparatus comprising:
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an N×
1 spatial mode multiplexer having N input ports and having an output port end-couplable to a multimode optical fiber, the multiplexer being configured to preferentially couple light between individual ones of the input ports and corresponding spatial optical modes of the multimode optical fiber;an optical source connected to a first one of said input ports to launch an optical probe pulse into the fiber; and an optical receiver connected to electrically analyze an optical signal backscattered from said multimode optical fiber and output by a second one of the input ports in response to the launch of the optical probe pulse into the fiber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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connecting an optical source to an input port of an N×
1 spatial mode multiplexer having N input ports and having an output port end-couplable to a multimode optical fiber, said spatial mode multiplexer being configured to preferentially couple light between individual ones of the input ports and corresponding spatial optical modes of the multimode optical fiber, and said optical source being configured to launch an optical probe pulse into the fiber; andconnecting an optical receiver to electrically analyze an optical signal backscattered from said multimode optical fiber and output by a second one of the input ports in response to the launch of the optical probe pulse into the fiber. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification