Multi-stage optical amplifier and broadband communication system
First Claim
1. A multi-stage optical amplifier, comprising:
- an amplifier including at least a distributed Raman amplifier fiber and a discrete amplifier fiber, the amplifier configured to be coupled to at least one signal source that produces a plurality of signal wavelengths λ
s and at least a first pump source that produces one or more pump beam wavelengths λ
p;
a signal input port coupled to the amplifier;
a signal output port coupled to the amplifier, the distributed Raman and discrete amplifier fibers being positioned between the signal input port and the signal output port;
a first pump input port coupled to a first end of the distributed Raman amplifier fiber and operable to introduce a first pump signal to the distributed Raman amplifier fiber;
a second pump input port coupled to a second end of the distributed Raman amplifier fiber and operable to introduce a second pump signal to the distributed Raman amplifier fiber, the first end being located closer to the signal input port than the second end, wherein the first pump signal traverses the distributed Raman amplifier fiber in a first direction and the second pump signal traverses the distributed Raman amplifier in a direction counter to the first direction; and
a third pump input port coupled to the discrete amplifier fiber.
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Accused Products
Abstract
A multi-stage optical amplifier includes at least a distributed Raman amplifier fiber and a discrete amplifier fiber. The amplifier is configured to be coupled to at least one signal source that produces a plurality of signal wavelengths λs; and at least a first pump source that produces one or more pump beam wavelengths λp. A signal input port is coupled to the amplifier. A signal output port is coupled to the amplifier. The distributed Raman and discrete amplifier fibers are positioned between the signal input port and the signal output port. A first pump input port is coupled to a first end of the distributed Raman amplifier fiber. A second pump input port is coupled to a second end of the distributed Raman amplifier fiber. The first end is located closer to the signal input port than the second end. A third pump input port is coupled to the discrete amplifier fiber.
214 Citations
102 Claims
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1. A multi-stage optical amplifier, comprising:
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an amplifier including at least a distributed Raman amplifier fiber and a discrete amplifier fiber, the amplifier configured to be coupled to at least one signal source that produces a plurality of signal wavelengths λ
s and at least a first pump source that produces one or more pump beam wavelengths λ
p;
a signal input port coupled to the amplifier;
a signal output port coupled to the amplifier, the distributed Raman and discrete amplifier fibers being positioned between the signal input port and the signal output port;
a first pump input port coupled to a first end of the distributed Raman amplifier fiber and operable to introduce a first pump signal to the distributed Raman amplifier fiber;
a second pump input port coupled to a second end of the distributed Raman amplifier fiber and operable to introduce a second pump signal to the distributed Raman amplifier fiber, the first end being located closer to the signal input port than the second end, wherein the first pump signal traverses the distributed Raman amplifier fiber in a first direction and the second pump signal traverses the distributed Raman amplifier in a direction counter to the first direction; and
a third pump input port coupled to the discrete amplifier fiber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A multi-stage optical amplifier, comprising:
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an optical fiber including at least a distributed Raman amplifier fiber and a discrete amplifier fiber, the optical fiber configured to be coupled to at least one signal source that produces a plurality of signal wavelengths λ
s and at least two pump sources that produce one or more pump beam wavelengths λ
p, wherein at least a portion of one of the distributed Raman amplifier fiber and the discrete amplifier fiber is a dispersion compensating fiber;
a signal input port coupled to the optical fiber;
a first pump input port positioned between the signal input port and the distributed Raman amplifier fiber, the first pump input port operable to introduce a first pump signal to the distributed Raman amplifier fiber;
a second pump input port operable to introduce a second pump signal to the distributed Raman amplifier fiber, the distributed Raman amplifier fiber being positioned between the signal input port and the second pump input port and the discrete amplifier fiber being positioned between the second pump input port and signal output port, wherein the first pump signal traverses the distributed Raman amplifier fiber in a first direction and the second pump signal traverses the distributed Raman amplifier in a direction counter to the first direction; and
a third pump input port configured to pump the discrete Raman amplifier fiber. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36)
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37. A multi-stage optical amplifier, comprising:
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an optical fiber including at least a distributed Raman amplifier fiber and a discrete amplifier fiber, the amplifier configured to be coupled to at least one signal source that produces a plurality of signal wavelengths λ
s and at least a first pump source that produces one or more pump beam wavelengths λ
p;
a signal input port coupled to the optical fiber;
a signal output port coupled to the optical fiber, the distributed Raman and discrete amplifier fibers being positioned between the signal input port and the signal output port;
a first pump input port coupled to the distributed Raman amplifier fiber;
a second pump input port coupled to the discrete amplifier fiber; and
a dispersion compensating member coupled to the optical fiber, wherein the dispersion compensating member has an opposite sign of dispersion slope and an opposite sign of dispersion relative to at least a portion of the optical fiber. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A multi-stage optical amplifier, comprising:
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an optical fiber including a first Raman amplifier fiber and a second Raman amplifier fiber, the optical fiber configured to be coupled to a signal source that produces a plurality of signal wavelengths λ
s and a pump source that produces one or more pump wavelengths λ
p, wherein the one or more pump wavelengths λ
p are less than at least a portion of the plurality of signal wavelengths λ
s;
a signal input port coupled to the optical fiber;
a signal output port coupled to the optical fiber;
a pump input port coupled to the optical fiber; and
a dispersion compensating member coupled to the optical fiber; and
a pump shunt coupled to the signal input port and the signal output port, wherein the pump shunt couples at least a portion of the one or more pump wavelengths λ
p between the first Raman amplifier fiber and the second Raman amplifier fiber. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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65. A multi-stage optical amplifier system, comprising:
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a plurality of transmitters that produce a plurality of signal wavelengths λ
s;
a multi-stage optical amplifier comprising;
at least a distributed Raman amplifier fiber and a discrete amplifier fiber, the multi-stage optical amplifier being coupled to the plurality of transmitters and configured to be coupled to at least a first pump source that produces one or more pump beam wavelengths λ
p;
a signal input port coupled to the amplifier, a signal output port coupled to the amplifier, the distributed Raman and discrete amplifier fibers being positioned between the signal input port and the signal output port;
a first pump input port coupled to a first end of the distributed Raman amplifier fiber and operable to introduce a first pump signal to the distributed Raman amplifier fiber;
a second pump input port coupled to a second end of the distributed Raman amplifier fiber and operable to introduce a second pump signal to the distributed Raman amplifier fiber, the first end being located closer to the signal input port than the second end, wherein the first pump signal traverses the distributed Raman amplifier fiber in a first direction and the second pump signal traverses the distributed Raman amplifier in a direction counter to the first direction;
a third pump input port coupled to the discrete amplifier fiber; and
a plurality of receivers coupled to the multi-stage optical amplifier. - View Dependent Claims (66, 67, 68, 69)
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70. A multi-stage optical amplifier system, comprising:
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a plurality of transmitters that produce a plurality of signal wavelengths λ
s;
a multi-stage optical amplifier comprising;
an optical fiber including at least a distributed Raman amplifier fiber and a discrete amplifier fiber, the multi-stage optical amplifier being coupled to the plurality of transmitters and configured to be coupled to at least two pump sources that produce one or more pump beam wavelengths λ
p, wherein at least a portion of one of the distributed Raman amplifier fiber and the discrete amplifier fiber is a dispersion compensating fiber;
a signal input port coupled to the amplifier;
a first pump input port positioned between the signal input port and the distributed Raman amplifier fiber, the first pump input port operable to introduce a first pump signal to the distributed Raman amplifier fiber;
a second pump input port operable to introduce a second pump signal to the distributed Raman amplifier fiber, the distributed Raman amplifier fiber being positioned between the signal input port and the second pump input port and the discrete amplifier fiber being positioned between the second pump input port and signal input port, wherein the first pump signal traverses the distributed Raman amplifier fiber in a first direction and the second pump signal traverses the distributed Raman amplifier in a direction counter to the first direction;
a third pump input port configured to pump the discrete Raman amplifier fiber; and
a plurality of receivers coupled to the multi-stage optical amplifier. - View Dependent Claims (71, 72, 73, 74)
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75. A multi-stage optical amplifier system, comprising:
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a plurality of transmitters that produce a plurality of signal wavelengths λ
s;
a multi-stage optical amplifier including, an optical fiber including at least a distributed Raman amplifier fiber and a discrete amplifier fiber, the multi-stage optical amplifier being coupled to the plurality of transmitters and configured to be coupled to at least a first pump source that produces one or more pump beam wavelengths λ
p;
a signal input port coupled to the optical fiber;
a signal output port coupled to the optical fiber, the distributed Raman and discrete amplifier fibers being positioned between the signal input port and the signal output port;
a first pump input port coupled to the distributed Raman amplifier fiber;
a second pump input port coupled to the discrete amplifier fiber;
a dispersion compensating member coupled to the optical fiber, wherein the dispersion compensating member has an opposite sign of dispersion slope and an opposite sign of dispersion relative to at least a portion of the optical fiber; and
a plurality of receivers coupled to the multi-stage optical amplifier. - View Dependent Claims (76, 77, 78, 79)
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80. A multi-stage optical amplifier system, comprising:
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a plurality of transmitters that produce a plurality of signal wavelengths λ
s;
a multi-stage optical amplifier including, an optical fiber including a first Raman amplifier fiber and a second Raman amplifier fiber, the multi-stage optical amplifier being coupled to the plurality of transmitters and configured to be coupled to a pump source that produces one or more pump wavelengths λ
p, wherein the one or more pump wavelengths λ
p are less than at least a portion of the plurality of signal wavelengths λ
s;
a signal input port coupled to the optical fiber;
a signal output port coupled to the optical fiber;
a pump input port coupled to the optical fiber;
a dispersion compensating member coupled to the optical fiber;
a pump shunt coupled to the signal input port and the signal output port, wherein the pump shunt couples at least a portion of the one or more pump wavelengths λ
p between the first Raman amplifier fiber and the second Raman amplifier fiber; and
a plurality of receivers coupled to the multi-stage optical amplifier. - View Dependent Claims (81, 82, 83, 84)
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85. A multi-stage optical amplifier, comprising:
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an amplifier including at least a distributed Raman amplifier fiber and a discrete amplifier fiber, the amplifier configured to be coupled to at least one signal source that produces a plurality of signal wavelengths λ
s and at least a first pump source that produces one or more pump beam wavelengths λ
p;
a signal input port coupled to the amplifier;
a signal output port coupled to the amplifier, the distributed Raman and discrete amplifier fibers being positioned between the signal input port and the signal output port;
a first pump input port coupled to a first end of the distributed Raman amplifier fiber;
a second pump input port coupled to a second end of the distributed Reman amplifier fiber, the first end being located closer to the signal input port than the second end; and
a third pump input port coupled to the discrete amplifier fiber. - View Dependent Claims (86, 87, 88, 89, 90, 91, 92, 93)
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94. A multi-stage optical amplifier, comprising:
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an optical fiber including at least a distributed Raman amplifier fiber and a discrete amplifier fiber, the optical fiber configured to be coupled to at least one signal source that produces a plurality of signal wavelengths λ
s and at least two pump sources that produce one or more pump beam wavelengths λ
p wherein at least portion of one of the distributed Raman amplifier fiber and the discrete amplifier fiber is a dispersion compensating fiber;
a signal input port coupled to the optical fiber;
a first pump input port positioned between the signal input port and the distributed Raman amplifier fiber;
a second pump input port, the distributed Raman amplifier fiber being positioned between the signal input port and the second pump input port and the discrete amplifier fiber being positioned between the second pump input port and signal output port; and
a third pump input port configured to pump the discrete Raman amplifier fiber.
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95. A multi-stage optical amplifier, comprising:
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an optical fiber including at least a distributed Raman amplifier fiber and a discrete amplifier fiber, the amplifier configured to be coupled to at least one signal source that produces a plurality of signal wavelengths λ
s and at least a first pump source that produces one or more pump beam wavelengths λ
p;
a signal input port coupled to the optical fiber;
a signal output port coupled to the optical fiber, the distributed Raman and discrete amplifier fibers being positioned between the signal input port and the signal output port;
a first pump input port coupled to the distributed Raman amplifier fiber;
a second pump input port coupled to the discrete amplifier fiber; and
a dispersion compensating member coupled to the optical fiber, wherein the dispersion compensating member has an opposite sign of dispersion slope and an opposite sign of dispersion relative to at least a portion of the optical fiber. - View Dependent Claims (96, 97, 98, 99, 100, 101, 102)
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Specification