Broadband amplifier and communication system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 17, 2003
Grant Date -
May 9, 2002
app pub date -
Oct 30, 2001
filing date -
Mar 24, 1998
priority date (Note) -
In Force
status (Latency Note)
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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.

First Claim
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | Total Patents |
---|---|---|
THE REGENTS OF THE UNIVERSITY OF MICHIGAN | ANN ARBOR, MI | 1671 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Islam, Mohammed N | Allen, TX | 146 | 3337 |
Cited Art Landscape
Patent Info | (Count) | # Cites | Year |
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4831616 Multiplexed fiber optics wideband data distribution system | 59 | 1987 | |
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6414786 Method and apparatus for reducing polarization dependent gain in Raman amplification | 32 | 2000 | |
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5210631 Transmission of AM-VSB video signals over an optical fiber | 51 | 1989 | |
5153762 Method and apparatus for recovering AM channell signals distributed on an optical fiber | 46 | 1990 | |
5107360 Optical transmission of RF subcarriers in adjacent signal bands | 43 | 1990 | |
5134620 Laser with longitudinal mode selection | 98 | 1990 | |
5212579 Method and apparatus for communicating amplitude modulated signals over an optical communication path | 30 | 1991 | |
5166821 Reduction of non-linear effects in optical fiber communication systems and method of using same | 77 | 1991 | |
5140456 Low noise high power optical fiber amplifier | 106 | 1991 | |
5159601 Method for producing a tunable erbium fiber laser | 98 | 1991 | |
5191586 Narrow band incoherent optical carrier generator | 78 | 1991 | |
5257124 Low distortion laser system for AM fiber optic communication | 60 | 1991 | |
5151908 Laser with longitudinal mode selection | 51 | 1991 | |
5222089 Optical signal source for overcoming distortion generated by an optical amplifier | 65 | 1992 | |
5200964 Broad linewidth lasers for optical fiber communication systems | 85 | 1992 | |
5187760 Wavelength selective coupler for high power optical communications | 75 | 1992 | |
5208819 Optical source with frequency locked to an in-fiber grating resonantor | 62 | 1992 | |
5243609 Laser with longitudinal mode selection | 60 | 1992 | |
5268910 Superluminescent optical source | 67 | 1992 | |
5271024 Optical fiber amplifier and laser with flattened gain slope | 97 | 1992 | |
5283686 Optical systems with grating reflector | 137 | 1992 | |
5293545 Optical source with reduced relative intensity noise | 72 | 1992 | |
5321707 Remote pumping for active optical devices | 45 | 1992 | |
5321543 Apparatus and method for linearizing an external optical modulator | 87 | 1992 | |
5400166 Communication of signals sharing a single optical source | 70 | 1992 | |
5373389 Method for linearizing an unbalanced Mach Zehnder optical frequency discriminator | 35 | 1992 | |
5295209 Spontaneous emission source having high spectral density at a desired wavelength | 70 | 1992 | |
5416629 Intensity modulated digital optical communications using a frequency modulated signal laser | 80 | 1992 | |
5301054 Transmission of AM-VSB video signals over an optical fiber | 39 | 1993 | |
5331449 Optical fiber tree and branch network for AM signal distribution | 56 | 1993 | |
5825520 Optical demultiplexers with grating reflectors | 44 | 1995 | |
6356383 Optical transmission systems including optical amplifiers apparatuses and methods | 68 | 2000 | |
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6101024 Nonlinear fiber amplifiers used for a 1430-1530nm low-loss window in optical fibers | 64 | 1998 | |
6374006 Chirped period gratings for raman amplification in circulator loop cavities | 89 | 1999 | |
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4740974 Optical amplifiers | 35 | 1985 | |
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5218655 Article comprising an optical waveguide with in-line refractive index grating | 77 | 1992 | |
5323404 Optical fiber laser or amplifier including high reflectivity gratings | 193 | 1993 | |
5530710 High-power pumping of three-level optical fiber laser amplifier | 62 | 1995 | |
5623508 Article comprising a counter-pumped optical fiber raman amplifier | 86 | 1996 | |
5673280 Article comprising low noise optical fiber raman amplifier | 116 | 1996 | |
5815518 Article comprising a cascaded raman fiber laser | 69 | 1997 | |
* 5905838 Dual window WDM optical fiber communication | 101 | 1998 | |
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5629795 Optical amplifying-repeating transmission system | 31 | 1995 | |
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6081366 Optical fiber communication system with a distributed Raman amplifier and a remotely pumped er-doped fiber amplifier | 91 | 1997 | |
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6359725 Multi-stage optical amplifier and broadband communication system | 78 | 1999 | |
6370164 Broadband sagnac raman amplifiers and cascade lasers | 46 | 2000 | |
6239903 Nonlinear fiber amplifiers for a 1430-1530nm low-loss window in optical fibers | 47 | 2000 | |
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5497386 Optical-fibre passively mode locked laser generator with non-linear polarization switching | 39 | 1994 | |
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6320884 Wide bandwidth Raman amplifier employing a pump unit generating a plurality of wavelengths | 60 | 1998 | |
* 6151160 Broadband Raman pre-amplifier for wavelength division multiplexed optical communication systems | 96 | 1998 | |
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6081355 Multi-wavelength light source | 34 | 1997 | |
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4881790 Optical communications system comprising raman amplification means | 84 | 1988 | |
4995690 Modulation instability-based fiber interferometric switch | 55 | 1989 | |
4932739 Ultra-fast optical logic devices | 73 | 1989 | |
5058974 Distributed amplification for lightwave transmission system | 80 | 1989 | |
5020050 Cascadable optical combinatorial logic gates | 48 | 1989 | |
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5778014 Sagnac raman amplifiers and cascade lasers | 84 | 1996 | |
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5664036 High resolution fiber optic probe for near field optical microscopy and method of making same | 83 | 1995 | |
5796909 All-fiber, high-sensitivity, near-field optical microscopy instrument employing guided wave light collector and specimen support | 44 | 1996 | |
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5838700 Raman fibre laser, bragg fibre-optical grating and method for changing the refraction index in germanium silicate glass | 46 | 1997 | |
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5757541 Method and apparatus for an optical fiber amplifier | 28 | 1997 | |
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5861981 Optical amplifier having dynamically shaped gain | 66 | 1997 | |
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6191854 Optical telecommunications system | 34 | 1998 | |
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5485536 Fiber optic probe for near field optical microscopy | 67 | 1994 | |
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5559920 Dispersion compensation in optical fiber communications | 69 | 1995 | |
* 5959750 Method of upgrading transmission capacity by Raman amplification | 130 | 1996 | |
5659644 Fiber light source with multimode fiber coupler | 66 | 1996 | |
6191877 WDM optical fiber system using Raman amplification | 52 | 1996 | |
5878071 Fabry-perot pulsed laser having a circulator-based loop reflector | 22 | 1997 | |
5847862 Multi-channel optical fiber communication system | 47 | 1997 | |
6147794 Raman amplifier with pump source for improved performance | 68 | 1999 | |
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5790300 Multi-channel fiber amplification system and associated method | 24 | 1996 | |
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5226049 Optical fiber rare earth ion upconversion laser system | 49 | 1992 | |
6437906 All-optical gain controlled L-band EDFA structure with reduced four-wave mixing cross-talk | 39 | 2000 | |
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5798853 Optical communication system compensating for chromatic dispersion and phase conjugate light generator for use therewith | 87 | 1996 | |
6219176 Method for gain equalization, and device and system for use in carrying out the method | 41 | 1998 | |
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4685107 Dispersion compensated fiber Raman oscillator | 52 | 1986 | |
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* 5887093 Optical fiber dispersion compensation | 101 | 1997 | |
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* 6310716 Amplifier system with a discrete Raman fiber amplifier module | 63 | 2000 | |
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6236496 Optical fiber amplifier and optical amplification method | 29 | 1997 | |
* 6263139 Optical transmission system with group velocity dispersion compensation | 50 | 1999 | |
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5050183 Figure eight shaped coherent optical pulse source | 81 | 1990 | |
5359612 High repetition rate, mode locked, figure eight laser with extracavity feedback | 62 | 1993 | |
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5225925 Sensitized erbium fiber optical amplifier and source | 59 | 1991 | |
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5542011 Optical amplifiers | 25 | 1994 | |
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5117196 Optical amplifier gain control | 67 | 1990 | |
5191628 Optical amplifiers | 80 | 1991 | |
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5504771 Fiber-optic ring laser | 38 | 1992 | |
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5485481 Fibre-grating-stabilized diode laser | 90 | 1994 | |
5659559 Apparatus for generating a stabilized laser source | 30 | 1995 | |
5841797 Apparatus for stabilizing multiple laser sources and their application | 61 | 1996 | |
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* 6404964 Dispersion managed optical waveguide and system with distributed amplification | 53 | 2000 | |
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5513194 Stretched-pulse fiber laser | 113 | 1995 | |
5617434 Stretched-pulse fiber laser | 87 | 1996 | |
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5039199 Lightwave transmission system having remotely pumped quasi-distributed amplifying fibers | 69 | 1989 | |
5078464 Optical logic device | 58 | 1990 | |
5101456 Predistortion apparatus for optical logic device | 52 | 1990 | |
5224194 All-optical timing restoration | 49 | 1991 | |
5115488 Apparatus comprising an all-optical gate | 46 | 1991 | |
5132976 Electrically tunable fiber ring laser | 35 | 1991 | |
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5450427 Technique for the generation of optical pulses in modelocked lasers by dispersive control of the oscillation pulse width | 132 | 1994 | |
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5577057 Modelocked lasers | 44 | 1993 | |
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5734665 Optical fiber laser | 26 | 1996 | |
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6104733 Multi-stage optical fiber amplifier having high conversion efficiency | 22 | 1998 | |
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5541947 Selectively triggered, high contrast laser | 84 | 1995 | |
6043927 Modulation instability wavelength converter | 76 | 1998 | |
6052393 Broadband Sagnac Raman amplifiers and cascade lasers | 84 | 1998 | |
6381391 Method and system for generating a broadband spectral continuum and continuous wave-generating system utilizing same | 85 | 1999 | |
6335820 Multi-stage optical amplifier and broadband communication system | 51 | 1999 | |
* 6356384 Broadband amplifier and communication system | 101 | 2000 | |
6239902 Nonlinear fiber amplifiers used for a 1430-1530nm low-loss window in optical fibers | 50 | 2000 | |
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5477555 Method and device for generating optical pulses | 28 | 1994 | |
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* 5978130 Dual-band fiber optic amplification system using a single pump source | 39 | 1997 | |
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5295016 Polarization insensitive amplification device | 33 | 1992 | |
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4952059 Reentrant fiber raman gyroscope | 22 | 1988 | |
5673281 Solid state system for frequency conversion using raman-active media and non-linear media | 53 | 1996 | |
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5579143 Optical system with tunable in-fiber gratings | 108 | 1993 | |
5467212 Addressable grating modulation system for optical cable TV system | 60 | 1994 | |
5557442 Optical amplifiers with flattened gain curves | 94 | 1994 | |
5659351 Switch and insertion networks in optical cable TV system | 98 | 1994 | |
5600473 Optical amplifier systems with add/drop multiplexing | 74 | 1995 | |
5504609 WDM optical communication system with remodulators | 116 | 1995 | |
5532864 Optical monitoring channel for wavelength division multiplexed optical communication system | 100 | 1995 | |
5555118 Method for removing and inserting optical carriers in a WDM optical communication system | 52 | 1995 | |
5701186 Optical cable TV system | 62 | 1996 | |
5726784 WDM optical communication system with remodulators and diverse optical transmitters | 101 | 1996 | |
5798855 Optical monitoring channel for wavelength division multiplexed optical communication system | 37 | 1996 | |
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6088152 Optical amplifier arranged to offset Raman gain | 95 | 1999 | |
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5479291 Non-linear optical interferometer with saturated amplifier | 27 | 1994 | |
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5768012 Apparatus and method for the high-power pumping of fiber optic amplifiers | 32 | 1997 | |
6008933 Multiple stage optical fiber amplifier | 24 | 1997 | |
5920423 Multiple pumped fiber amplifiers for WDM communication systems with adjustment for the amplifier signal gain bandwidth | 81 | 1997 | |
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5883736 Er-doped optical fiber amplifier | 74 | 1997 | |
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* 6417959 Raman fiber amplifier | 49 | 2001 | |
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5369519 All-optical timing restoration | 42 | 1993 | |
5389779 Method and apparatus for near-field, scanning, optical microscopy by reflective, optical feedback | 49 | 1993 | |
5521738 Data encoded optical pulse generator | 34 | 1994 | |
5473622 Cladding-pumped MOPA structure | 65 | 1994 | |
5880866 Time division demultiplexing using selective Raman amplification | 42 | 1996 |
Patent Citation Ranking
Forward Cite Landscape
Patent Info | (Count) | # Cites | Year |
---|---|---|---|
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* 2014/0270,634 MULTI- PURPOSE APPARATUS FOR SWITCHING, AMPLIFYING, REPLICATING, AND MONITORING OPTICAL SIGNALS ON A MULTIPLICITY OF OPTICAL FIBERS | 1 | 2014 | |
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* 7196840 Amplitude balancing for multilevel signal transmission | 1 | 2002 | |
* 2003/0147,127 Amplitude balancing for multilevel signal transmission | 0 | 2002 | |
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* 7280719 Wideband optical module and PON using the same | 0 | 2005 | |
* 2006/0029,393 Wideband optical module and PON using the same | 0 | 2005 | |
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* 7372622 Optical transmission system, optical repeater, and optical transmission method | 0 | 2006 | |
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7254341 System and method for dispersion compensation in an optical communication system | 1 | 2006 | |
* 2006/0188,263 System and Method for Dispersion Compensation in an Optical Communication System | 2 | 2006 | |
7974002 System and method for managing system margin | 2 | 2007 | |
* 2007/0188,851 System and Method for Managing System Margin | 1 | 2007 |
Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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