Broadband amplifier and communication system
First Claim
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1. A method of broadband amplification, comprising:
- dividing an optical signal with wavelength of 1430 nm to 1620 nm at a preselected wavelength into a first beam and a second beam;
directing the first beam to a Raman amplifier assembly that includes a dispersion compensating fiber with a magnitude of dispersion of at least 50 ps/(nm)(km) to produce an amplified first beam;
directing the second beam to at least one rare earth doped fiber amplifier and produce an amplified second beam; and
combining the first and second amplified beams.
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Abstract
A method of broadband amplification divides an optical signal of wavelength of 1430 nm to 1620 nm at a preselected wavelength into a first beam and a second beam. The first beam is directed to at least one optical amplifier and produces an amplified first beam. The second beam is directed to at least one rare earth doped fiber amplifier to produce an amplified second beam. The first and second amplified beams are combined.
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Citations
24 Claims
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1. A method of broadband amplification, comprising:
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dividing an optical signal with wavelength of 1430 nm to 1620 nm at a preselected wavelength into a first beam and a second beam;
directing the first beam to a Raman amplifier assembly that includes a dispersion compensating fiber with a magnitude of dispersion of at least 50 ps/(nm)(km) to produce an amplified first beam;
directing the second beam to at least one rare earth doped fiber amplifier and produce an amplified second beam; and
combining the first and second amplified beams. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of transmitting WDM wavelengths in a broadband communication system, comprising:
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propagating a plurality of WDM wavelengths from a transmitter assembly along a transmission line;
amplifying at least a portion of the plurality of wavelengths with a Raman amplifier assembly that includes a distributed Raman amplifier and a discrete Raman amplifier, at least a portion of the amplifier assembly including a dispersion compensating fiber with magnitude of dispersion of at least 50 ps/(nm)(km) to create a plurality of amplified WDM wavelengths; and
receiving the plurality of amplified WDM wavelengths at a receiver assembly. - View Dependent Claims (11, 12, 13, 14, 15, 16, 21)
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17. A method of transmitting WDM wavelengths in a broadband communication system, comprising:
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propagating a first plurality of WDM wavelengths in the wavelength range of 1530 to 1620 from a transmitter assembly along a transmission line;
introducing a second plurality of WDM wavelengths in the wavelength range of 1430 to 1530 to the transmission line;
amplifying the second plurality of WDM wavelengths by Raman amplification in a Raman amplifier assembly that includes a dispersion compensating fiber with a magnitude of dispersion of at least 50 ps/(nm)(km) after the second plurality of WDM wavelengths are introduced to the transmission line;
receiving the first and second pluralities of WDM wavelengths at a receiver assembly. - View Dependent Claims (18, 19, 20, 22, 23, 24)
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Specification
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Current AssigneeBoard of Regents of the University of Michigan (University of Michigan), Xtera Communications Incorporated (Xtera Topco Ltd.)
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Original AssigneeXtera Communications Incorporated (Xtera Topco Ltd.)
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InventorsIslam, Mohammed N.
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Primary Examiner(s)Tarcza, Thomas H.
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Assistant Examiner(s)Hughes, Deandra M.
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Application NumberUS09/547,165Time in Patent Office700 DaysField of Search372/3, 359/334, 359/337.5, 359/341.1, 359/349US Class Current359/334CPC Class CodesH01S 3/1083 using parametric generationH01S 3/302 in an optical fibreH04B 10/291 in which processing or ampl...H04B 10/2916 using Raman or Brillouin am...H04B 2210/258 treating each wavelength or...
