US Patent Application No: 2012/0039,606

Number of patents in Portfolio can not be more than 2000

LOW POWER OPTICAL TRANSCEIVER USING ORTHOGONAL POLARIZATION DETECTION TECHNIQUE

ALSO PUBLISHED AS: 8977125

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method and apparatus for simultaneous processing of signals impressed on a horizontal polarization of a light wave and on a vertical polarization of the light wave is provided. In one embodiment, a horizontal polarization pilot tone is impressed on a data signal carried by the horizontal polarization and a vertical polarization pilot tone is impressed on a data signal carried by the vertical polarization. A receiver processes the dual-polarized light wave and converts it to an X channel signal and a Y channel signal. The X and Y channel signals are processed in separate channels to recover a phase and frequency offset between them and a local oscillator. The phase and frequency recovered and frequency de-multiplexed signals are further processed to polarization de-multiplex the data signal carried by the horizontal polarization and the data signal carried by the vertical polarization.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CIENA CORPORATIONLINTHICUM, MD1492

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
FRANKEL, Michael Y Baltimore, US 64 168
GRIGORYAN, Vladimir S Elkridge, US 8 3
PELEKHATY, Vladimir Baltimore, US 16 64

Cited Art Landscape

Patent Info (Count) # Cites Year
 
FUTUREWEI TECHNOLOGIES, INC. (1)
* 2012/0033,965 Method and Apparatus for Broadband Carrier Frequency and Phase Recovery in Coherent Optical System 17 2011
 
TYCO ELECTRONICS SUBSEA COMMUNICATIONS LLC (1)
* 8,090,270 Frequency offset polarization multiplexing modulation format and system incorporating the same 2 2008
 
CISCO TECHNOLOGY, INC. (1)
* 2010/0209,102 ENCODING FIBRE CHANNEL OVER ETHERNET TRANSPORT 1 2009
 
ALCATEL LUCENT (1)
* 2010/0329,683 System, Method and Apparatus for Coherent Optical OFDM 9 2009
 
XIEON NETWORKS S.A.R.L. (1)
* 2005/0265,727 Method for transmitting at least one first and second data signal in polarization multiplex in an optical transmission system 8 2005
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
INFINERA CORPORATION (2)
* 8,768,177 Wavelength division multiplexed optical communication system having variable channel spacings 0 2010
* 2012/0082,453 WAVELENGTH DIVISION MULTIPLEXED OPTICAL COMMUNICATION SYSTEM HAVING VARIABLE CHANNEL SPACINGS 1 2010
 
ALCATEL LUCENT (3)
* 8,660,433 Pilot-assisted data transmission in a coherent optical-communication system 0 2010
8,903,238 Ultra dense WDM with agile and flexible DSP add-drop 0 2012
* 2014/0072,303 ULTRA DENSE WDM WITH AGILE AND FLEXIBLE DSP ADD-DROP 0 2012
* Cited By Examiner