US Patent No: 5,295,016

Number of patents in Portfolio can not be more than 2000

Polarization insensitive amplification device

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Abstract

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A polarization-independent amplification device comprising an optical semiconductor amplifier. The amplification device input signal is fed to one side of the amplifier and a reflector is provided at the other side. The amplification device output signal, formed by the amplification device input signal reflected by the reflector and amplified by the amplifier, is taken off at the first side of the amplifier. The reflector is reciprocal, a signal or signal component fed thereto and having a polarization perpendicular to the principal axis of the amplifier being reflected as a reflection signal having a polarization which is virtually parallel to said principal axis and vice versa.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
KONINKLIJKE KPN N.V.THE HAGUE228

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
van, Deventer Mattijs O Leidschendam, NL 11 104

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Bell Telephone Laboratories, Incorporated (3)
4,900,917 Polarization insensitive optical communication device utilizing optical preamplification 22 1988
4,941,738 Polarization independent optical amplifier apparatus 31 1988
4,952,017 Polarization independent semiconductor optical amplifier 18 1989
 
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY (1)
5,010,586 Optical two-way transmission system with loop reflector modulator 42 1988

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
XTERA COMMUNICATIONS, INC. (11)
6,567,430 Raman oscillator including an intracavity filter and amplifiers utilizing same 9 1999
6,359,725 Multi-stage optical amplifier and broadband communication system 75 1999
6,370,164 Broadband sagnac raman amplifiers and cascade lasers 46 2000
6,631,025 Low-noise distributed Raman amplifier using bi-directional pumping using multiple Raman orders 17 2001
6,760,148 Nonlinear polarization amplifiers in nonzero dispersion shifted fiber 12 2001
6,600,592 S+ band nonlinear polarization amplifiers 4 2001
6,574,037 All band amplifier 40 2001
6,885,498 Multi-stage optical amplifier and broadband communication system 13 2001
6,833,946 Optical amplification using polarization diversity pumping 8 2002
6,714,342 Low-noise distributed Raman amplifier using bi-directional pumping using multiple Raman orders 2 2003
6,919,986 Nonlinear polarization amplifiers in nonzero dispersion shifted fiber 1 2003
 
THE REGENTS OF THE UNIVERSITY OF MICHIGAN (6)
6,985,283 Fiber-optic compensation for dispersion, gain tilt, and band pump nonlinearity 5 1999
6,335,820 Multi-stage optical amplifier and broadband communication system 51 1999
6,356,384 Broadband amplifier and communication system 99 2000
6,760,509 SNR booster for WDM systems 2 2001
6,580,548 Broadband amplifier and communication system 5 2001
6,693,738 Broadband amplifier and communication system 4 2001
 
FUJITSU LIMITED (2)
7,375,878 Optical repeater 0 2003
7,616,377 Optical repeater 0 2008
 
INFINERA CORPORATION (2)
8,452,185 Polarization insensitive optical circuit 0 2007
8,314,988 Polarization insensitive optical circuit 0 2007
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (2)
6,831,779 Method and apparatus for stabilizing a high-gain, high-power single polarization EDFA 8 2001
7,181,097 Methods of achieving optimal communications performance 3 2002
 
SAMSUNG ELECTRONICS CO., LTD. (2)
7,173,757 Broad-band light source using a semiconductor optical amplifier 3 2004
7,110,168 Optical signal transmission apparatus including reflective gain-clamped semiconductor optical amplifier 7 2004
 
BANDWIDWITH SOLUTIONS, INC. (1)
6,374,006 Chirped period gratings for raman amplification in circulator loop cavities 66 1999
 
CHEMIMAGE TECHNOLOGIES LLC (1)
7,848,000 Birefringent spectral filter with wide field of view and associated communications method and apparatus 3 2007
 
LUCENT TECHNOLOGIES INC. (1)
5,822,113 Optical amplifier using optical circulator and fiber amplifier 18 1996
 
NP PHOTONICS, INC. (1)
6,700,697 Reflective erbium-doped amplifier 9 2002
 
PRINCETON LIGHTWAVE, INC. (1)
6,175,446 Polarization-independent semiconductor optical amplifier 13 1998
 
RAYTHEON COMPANY (1)
6,965,472 Nonreciprocal optical element with independent control of transmission opposite directions 4 2004
 
TIME-BANDWIDTH PRODUCTS AG (1)
6,384,966 Multiple pass optical amplifier with thermal birefringence compensation 13 1999