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Christoph Wree Phones & Addresses

  • 15 Yorkshire Cir, Trenton, NJ 08628
  • Ewing, NJ

Publications

Us Patents

Method And Apparatus For Repeaterless High-Speed Optical Transmission Over Single-Mode Fiber Using Coherent Receiver And Electronic Dispersion Compensation

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US Patent:
8126338, Feb 28, 2012
Filed:
Oct 29, 2008
Appl. No.:
12/290250
Inventors:
Christoph T. Wree - Ewing NJ, US
Suhas P. Bhandare - Levittown PA, US
Donald A. Becker - Edison NJ, US
Daniel R. Mohr - Allentown NJ, US
Abhay M. Joshi - New Hope PA, US
Assignee:
Discovery Semiconductors, Inc. - Ewing NJ
International Classification:
H04B 10/06
US Classification:
398208, 398204
Abstract:
Repeaterless transmission of differential phase-shift keying (DPSK) at 10. 7 Gb/s over at least 304 km of standard single-mode fiber is obtained through use of a coherent optical receiver including electronic dispersion compensation. High receiver sensitivity and high tolerance to nonlinearities of DPSK, allow overcoming a total link loss of 58 dB with a 3 dB system margin, through use in the receiver of heterodyne detection to preserve phase distortions resulting from chromatic dispersion, to permit electronic dispersion compensation to be used.

Feedback-Controlled Coherent Optical Receiver With Electrical Compensation/Equalization

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US Patent:
20080038001, Feb 14, 2008
Filed:
Feb 27, 2007
Appl. No.:
11/711572
Inventors:
Donald Becker - Edison NJ, US
Daniel Mohr - Allentown NJ, US
Christoph Wree - Ewing NJ, US
Abhay Joshi - New Hope PA, US
International Classification:
H04B 10/06
US Classification:
398204000
Abstract:
An optical coherent receiver in one embodiment has a heterodyne configuration, and in another embodiment has a homodyne configuration, in each configuration employs multiple feedback signaling and analog/digital processing to optimize response to a modulated optical input signal, the provision of both individual RF I and RF Q channel outputs.
Christoph Tm Wree from Ewing, NJ Get Report