OPTICAL FIBER TRANSMISSION SYSTEM WITH INCREASED EFFECTIVE MODAL BANDWIDTH TRANSMISSION
First Claim
1. A multi-mode optical fiber link comprising:
- a first spatial mode converter having an input that is coupled to an output of a single mode optical fiber, the first spatial mode converter conditioning a modal profile of an optical signal propagating from the single mode optical fiber to the first spatial mode converter;
a multi-mode optical fiber having an input that is coupled to an output of the first spatial mode converter; and
a second spatial mode converter having an input that is coupled to an output of the multi-mode optical fiber and an output that is coupled to a second single mode optical fiber, the second spatial mode converter reducing a number of optical modes in the optical signal, wherein both the first and the second spatial mode converters increase an effective modal bandwidth of the optical signal.
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Abstract
A multi-mode optical fiber link is described. The multi-mode optical fiber link includes a first spatial mode converter that is coupled to a first single mode optical fiber. The first spatial mode converter conditions a modal profile of an optical signal propagating from the single mode optical fiber to the first spatial mode converter. A multi-mode optical fiber is coupled to the first spatial mode converter. A second spatial mode converter is coupled to an output of the multi-mode optical fiber and to a second single mode optical fiber. The second spatial mode converter reduces a number of optical modes in the optical signal. Both the first and the second spatial mode converters increase an effective modal bandwidth of the optical signal.
22 Citations
39 Claims
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1. A multi-mode optical fiber link comprising:
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a first spatial mode converter having an input that is coupled to an output of a single mode optical fiber, the first spatial mode converter conditioning a modal profile of an optical signal propagating from the single mode optical fiber to the first spatial mode converter;
a multi-mode optical fiber having an input that is coupled to an output of the first spatial mode converter; and
a second spatial mode converter having an input that is coupled to an output of the multi-mode optical fiber and an output that is coupled to a second single mode optical fiber, the second spatial mode converter reducing a number of optical modes in the optical signal, wherein both the first and the second spatial mode converters increase an effective modal bandwidth of the optical signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of increasing effective modal bandwidth of an optical signal transmitting through a multi-mode optical fiber, the method comprising:
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spatial mode converting an optical signal, thereby reducing modal dispersion and increasing an effective bandwidth of the optical signal;
propagating the spatially mode converted optical signal through a multi-mode optical fiber; and
spatial mode converting the spatially mode converted optical signal propagated through the multi-mode optical fiber, thereby further reducing modal dispersion and further increasing the effective bandwidth of the optical signal. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A multi-mode optical communication system comprising:
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an optical transmitter that generates an optical signal at an output;
a first spatial mode converter having an input that is coupled to the output of the optical transmitter, the first spatial mode converter conditioning a modal profile of the optical signal;
a multi-mode optical fiber having an input that is coupled to an output of the first spatial mode converter;
a second spatial mode converter having an input that is coupled to an output of the multi-mode optical fiber, the second spatial mode converter reducing a number of optical modes in the optical signal, wherein both the first and the second spatial mode converters increase an effective modal bandwidth of the optical signal; and
an optical receiver having an input that is coupled to an output of the second spatial mode converter, the optical receiver receiving the optical signal. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A multi-mode optical communication system comprising:
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means for spatial mode converting an optical signal, thereby reducing modal dispersion and increasing an effective bandwidth of the optical signal;
means for propagating the spatially mode converted optical signal through a multi-mode optical fiber; and
means for spatial mode converting the spatially mode converted optical signal propagated through the multi-mode optical fiber, thereby further reducing modal dispersion and further increasing the effective bandwidth of the optical signal.
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Specification