US Patent No: 6,580,548

Number of patents in Portfolio can not be more than 2000

Broadband amplifier and communication system

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Abstract

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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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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
THE REGENTS OF THE UNIVERSITY OF MICHIGANANN ARBOR, MI1460

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Islam, Mohammed N Allen, TX 136 2748

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
4,831,616 Multiplexed fiber optics wideband data distribution system 59 1987
 
BANDWIDTH SOLUTIONS, INC. (1)
5,778,014 Sagnac raman amplifiers and cascade lasers 84 1996
 
TYCO ELECTRONICS SUBSEA COMMUNICATIONS LLC (1)
6,414,786 Method and apparatus for reducing polarization dependent gain in Raman amplification 32 2000
 
LEVEL 3 COMMUNICATIONS, LLC (30)
5,210,631 Transmission of AM-VSB video signals over an optical fiber 50 1989
5,153,762 Method and apparatus for recovering AM channell signals distributed on an optical fiber 45 1990
5,107,360 Optical transmission of RF subcarriers in adjacent signal bands 43 1990
5,134,620 Laser with longitudinal mode selection 83 1990
5,212,579 Method and apparatus for communicating amplitude modulated signals over an optical communication path 29 1991
5,166,821 Reduction of non-linear effects in optical fiber communication systems and method of using same 76 1991
5,140,456 Low noise high power optical fiber amplifier 106 1991
5,159,601 Method for producing a tunable erbium fiber laser 95 1991
5,191,586 Narrow band incoherent optical carrier generator 77 1991
5,257,124 Low distortion laser system for AM fiber optic communication 60 1991
5,151,908 Laser with longitudinal mode selection 50 1991
5,222,089 Optical signal source for overcoming distortion generated by an optical amplifier 61 1992
5,200,964 Broad linewidth lasers for optical fiber communication systems 85 1992
5,187,760 Wavelength selective coupler for high power optical communications 75 1992
5,208,819 Optical source with frequency locked to an in-fiber grating resonantor 62 1992
5,243,609 Laser with longitudinal mode selection 60 1992
5,268,910 Superluminescent optical source 66 1992
5,271,024 Optical fiber amplifier and laser with flattened gain slope 97 1992
5,283,686 Optical systems with grating reflector 137 1992
5,293,545 Optical source with reduced relative intensity noise 71 1992
5,321,707 Remote pumping for active optical devices 43 1992
5,321,543 Apparatus and method for linearizing an external optical modulator 85 1992
5,400,166 Communication of signals sharing a single optical source 66 1992
5,373,389 Method for linearizing an unbalanced Mach Zehnder optical frequency discriminator 35 1992
5,295,209 Spontaneous emission source having high spectral density at a desired wavelength 69 1992
5,416,629 Intensity modulated digital optical communications using a frequency modulated signal laser 79 1992
5,301,054 Transmission of AM-VSB video signals over an optical fiber 39 1993
5,331,449 Optical fiber tree and branch network for AM signal distribution 48 1993
5,825,520 Optical demultiplexers with grating reflectors 44 1995
6,356,383 Optical transmission systems including optical amplifiers apparatuses and methods 68 2000
 
BANDWIDWITH SOLUTIONS, INC. (2)
6,101,024 Nonlinear fiber amplifiers used for a 1430-1530nm low-loss window in optical fibers 62 1998
6,374,006 Chirped period gratings for raman amplification in circulator loop cavities 75 1999
 
STC PLC (1)
4,740,974 Optical amplifiers 35 1985
 
FURUKAWA ELECTRIC NORTH AMERICA, INC. (7)
5,218,655 Article comprising an optical waveguide with in-line refractive index grating 63 1992
5,323,404 Optical fiber laser or amplifier including high reflectivity gratings 173 1993
5,530,710 High-power pumping of three-level optical fiber laser amplifier 62 1995
5,623,508 Article comprising a counter-pumped optical fiber raman amplifier 86 1996
5,673,280 Article comprising low noise optical fiber raman amplifier 116 1996
5,815,518 Article comprising a cascaded raman fiber laser 68 1997
* 5,905,838 Dual window WDM optical fiber communication 100 1998
 
KDDI CORPORATION (1)
5,629,795 Optical amplifying-repeating transmission system 31 1995
 
TYCO SUBMARINE SYSTEMS LTD. (1)
6,081,366 Optical fiber communication system with a distributed Raman amplifier and a remotely pumped er-doped fiber amplifier 89 1997
 
XTERA COMMUNICATIONS, INC. (3)
6,359,725 Multi-stage optical amplifier and broadband communication system 77 1999
6,370,164 Broadband sagnac raman amplifiers and cascade lasers 46 2000
6,239,903 Nonlinear fiber amplifiers for a 1430-1530nm low-loss window in optical fibers 47 2000
 
OPTICAL TECHNOLOGIES U.S.A. CORP. (1)
5,497,386 Optical-fibre passively mode locked laser generator with non-linear polarization switching 39 1994
 
TYCO TELECOMMUNICATIONS (US) INC. (2)
6,320,884 Wide bandwidth Raman amplifier employing a pump unit generating a plurality of wavelengths 60 1998
* 6,151,160 Broadband Raman pre-amplifier for wavelength division multiplexed optical communication systems 96 1998
 
KABUSHIKI KAISHA TOSHIBA (1)
6,081,355 Multi-wavelength light source 33 1997
 
Bell Telephone Laboratories, Incorporated (5)
4,881,790 Optical communications system comprising raman amplification means 82 1988
4,995,690 Modulation instability-based fiber interferometric switch 55 1989
4,932,739 Ultra-fast optical logic devices 73 1989
5,058,974 Distributed amplification for lightwave transmission system 80 1989
5,020,050 Cascadable optical combinatorial logic gates 48 1989
 
BRUKER NANO, INC. (2)
5,664,036 High resolution fiber optic probe for near field optical microscopy and method of making same 82 1995
5,796,909 All-fiber, high-sensitivity, near-field optical microscopy instrument employing guided wave light collector and specimen support 43 1996
 
NAUCHNY TSENTR VOLOKONNOI OPTIKI PRI INSTITUTE OBSCHEI FIZIKI ROSSIISKOI AKADEMII NAUK (1)
5,838,700 Raman fibre laser, bragg fibre-optical grating and method for changing the refraction index in germanium silicate glass 45 1997
 
NORTHROP GRUMMAN SYSTEMS CORPORATION (1)
5,757,541 Method and apparatus for an optical fiber amplifier 28 1997
 
Ditech Corporation (1)
5,861,981 Optical amplifier having dynamically shaped gain 65 1997
 
PIRELLI SUBMARINE TELECOM SYSTEMS ITALIA S.P.A. (1)
6,191,854 Optical telecommunications system 32 1998
 
VEECO INSTRUMENTS INC. (1)
5,485,536 Fiber optic probe for near field optical microscopy 67 1994
 
LUCENT TECHNOLOGIES INC. (8)
5,559,920 Dispersion compensation in optical fiber communications 68 1995
* 5,959,750 Method of upgrading transmission capacity by Raman amplification 130 1996
5,659,644 Fiber light source with multimode fiber coupler 63 1996
6,191,877 WDM optical fiber system using Raman amplification 52 1996
5,878,071 Fabry-perot pulsed laser having a circulator-based loop reflector 22 1997
* 5,887,093 Optical fiber dispersion compensation 101 1997
5,847,862 Multi-channel optical fiber communication system 47 1997
6,147,794 Raman amplifier with pump source for improved performance 67 1999
 
McDonnell Douglas Corporation (1)
5,790,300 Multi-channel fiber amplification system and associated method 24 1996
 
CISCO TECHNOLOGY, INC. (2)
5,226,049 Optical fiber rare earth ion upconversion laser system 45 1992
6,437,906 All-optical gain controlled L-band EDFA structure with reduced four-wave mixing cross-talk 38 2000
 
FUJITSU LIMITED (2)
5,798,853 Optical communication system compensating for chromatic dispersion and phase conjugate light generator for use therewith 85 1996
6,219,176 Method for gain equalization, and device and system for use in carrying out the method 41 1998
 
SPECTRA-PHYSICS, INC. (1)
4,685,107 Dispersion compensated fiber Raman oscillator 50 1986
 
II-VI INCORPORATED (1)
* 6,310,716 Amplifier system with a discrete Raman fiber amplifier module 63 2000
 
NIPPON TELEGRAPH AND TELEPHONE CORPORATION (2)
6,236,496 Optical fiber amplifier and optical amplification method 28 1997
* 6,263,139 Optical transmission system with group velocity dispersion compensation 48 1999
 
The United States of America as represented by the Secretary of the Navy (2)
5,050,183 Figure eight shaped coherent optical pulse source 77 1990
5,359,612 High repetition rate, mode locked, figure eight laser with extracavity feedback 59 1993
 
FIBERCORE, LTD. (1)
5,225,925 Sensitized erbium fiber optical amplifier and source 59 1991
 
NORTEL NETWORKS UK LIMITED (1)
5,542,011 Optical amplifiers 25 1994
 
NORTEL NETWORKS LIMITED (2)
5,117,196 Optical amplifier gain control 67 1990
5,191,628 Optical amplifiers 66 1991
 
AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD. (1)
6,104,733 Multi-stage optical fiber amplifier having high conversion efficiency 20 1998
 
CALIFORNIA INSTITUTE OF TECHNOLOGY (1)
5,504,771 Fiber-optic ring laser 37 1992
 
JDS UNIPHASE CORPORATION (3)
5,485,481 Fibre-grating-stabilized diode laser 90 1994
5,659,559 Apparatus for generating a stabilized laser source 29 1995
5,841,797 Apparatus for stabilizing multiple laser sources and their application 56 1996
 
CORNING INCORPORATED (1)
* 6,404,964 Dispersion managed optical waveguide and system with distributed amplification 49 2000
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (2)
5,513,194 Stretched-pulse fiber laser 104 1995
5,617,434 Stretched-pulse fiber laser 82 1996
 
AT&T Bell Laboratories (6)
5,039,199 Lightwave transmission system having remotely pumped quasi-distributed amplifying fibers 69 1989
5,078,464 Optical logic device 58 1990
5,101,456 Predistortion apparatus for optical logic device 51 1990
5,224,194 All-optical timing restoration 49 1991
5,115,488 Apparatus comprising an all-optical gate 46 1991
5,132,976 Electrically tunable fiber ring laser 35 1991
 
IMRA AMERICA, INC. (1)
5,450,427 Technique for the generation of optical pulses in modelocked lasers by dispersive control of the oscillation pulse width 121 1994
 
TELSTRA CORPORATION LIMITED (1)
5,577,057 Modelocked lasers 43 1993
 
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE (1)
5,734,665 Optical fiber laser 25 1996
 
THE REGENTS OF THE UNIVERSITY OF MICHIGAN (7)
5,541,947 Selectively triggered, high contrast laser 78 1995
6,043,927 Modulation instability wavelength converter 62 1998
6,052,393 Broadband Sagnac Raman amplifiers and cascade lasers 83 1998
6,381,391 Method and system for generating a broadband spectral continuum and continuous wave-generating system utilizing same 60 1999
6,335,820 Multi-stage optical amplifier and broadband communication system 51 1999
* 6,356,384 Broadband amplifier and communication system 100 2000
6,239,902 Nonlinear fiber amplifiers used for a 1430-1530nm low-loss window in optical fibers 50 2000
 
VERIZON PATENT AND LICENSING INC. (1)
* 5,978,130 Dual-band fiber optic amplification system using a single pump source 38 1997
 
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY (2)
4,952,059 Reentrant fiber raman gyroscope 22 1988
5,673,281 Solid state system for frequency conversion using raman-active media and non-linear media 49 1996
 
CIENA CORPORATION (11)
5,579,143 Optical system with tunable in-fiber gratings 105 1993
5,467,212 Addressable grating modulation system for optical cable TV system 60 1994
5,557,442 Optical amplifiers with flattened gain curves 94 1994
5,659,351 Switch and insertion networks in optical cable TV system 98 1994
5,600,473 Optical amplifier systems with add/drop multiplexing 74 1995
5,504,609 WDM optical communication system with remodulators 116 1995
5,532,864 Optical monitoring channel for wavelength division multiplexed optical communication system 99 1995
5,555,118 Method for removing and inserting optical carriers in a WDM optical communication system 52 1995
5,701,186 Optical cable TV system 62 1996
5,726,784 WDM optical communication system with remodulators and diverse optical transmitters 100 1996
5,798,855 Optical monitoring channel for wavelength division multiplexed optical communication system 36 1996
 
ALCATEL LUCENT (1)
6,088,152 Optical amplifier arranged to offset Raman gain 94 1999
 
IPG PHOTONICS CORPORATION (1)
5,479,291 Non-linear optical interferometer with saturated amplifier 27 1994
 
LUMENTUM OPERATIONS LLC (3)
5,768,012 Apparatus and method for the high-power pumping of fiber optic amplifiers 32 1997
6,008,933 Multiple stage optical fiber amplifier 24 1997
5,920,423 Multiple pumped fiber amplifiers for WDM communication systems with adjustment for the amplifier signal gain bandwidth 81 1997
 
OPLINK TECHNOLOGY, INC. (1)
5,883,736 Er-doped optical fiber amplifier 74 1997
 
FRANCE TELECOM (1)
5,477,555 Method and device for generating optical pulses 28 1994
 
KONINKLIJKE KPN N.V. (1)
5,295,016 Polarization insensitive amplification device 33 1992
 
F. POSZAT HU, L.L.C. (1)
* 6,417,959 Raman fiber amplifier 49 2001
 
AT&T CORP. (5)
5,369,519 All-optical timing restoration 42 1993
5,389,779 Method and apparatus for near-field, scanning, optical microscopy by reflective, optical feedback 48 1993
5,521,738 Data encoded optical pulse generator 34 1994
5,473,622 Cladding-pumped MOPA structure 64 1994
5,880,866 Time division demultiplexing using selective Raman amplification 41 1996
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
ARRIS ENTERPRISES, INC. (2)
* 7,196,840 Amplitude balancing for multilevel signal transmission 0 2002
* 2003/0147,127 Amplitude balancing for multilevel signal transmission 0 2002
 
SAMSUNG ELECTRONICS CO., LTD. (2)
* 7,280,719 Wideband optical module and PON using the same 0 2005
* 2006/0029,393 Wideband optical module and PON using the same 0 2005
 
FUJITSU LIMITED (1)
* 7,372,622 Optical transmission system, optical repeater, and optical transmission method 0 2006
 
XTERA COMMUNICATIONS, INC. (4)
7,254,341 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
7,974,002 System and method for managing system margin 2 2007
* 2007/0188,851 System and Method for Managing System Margin 1 2007
* Cited By Examiner