Frequency Estimation in Intradyne Reception

We report on an optical intradyne receiver experiment with frequency estimation. Frequency estimation allows, if performed prior to block phase estimation or other phase recovery techniques, for a much higher frequency difference between transmit laser and local oscillator laser. We demonstrate the feasibility of our approach in a 20-Gb/s quadrature phase-shift keying experiment

[1]  F. Derr,et al.  Optical QPSK transmission system with novel digital receiver concept , 1991 .

[2]  H. Nasu,et al.  Recent advances in DFB lasers for ultradense WDM applications , 2004, IEEE Journal of Selected Topics in Quantum Electronics.

[3]  A. Leven,et al.  Digital coherent quadrature phase-shift-keying (QPSK) , 2006, 2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference.

[4]  K. Kikuchi,et al.  Coherent detection of optical quadrature phase-shift keying signals with carrier phase estimation , 2006, Journal of Lightwave Technology.

[5]  S. Bhandare,et al.  First Real-Time Data Recovery for Synchronous QPSK Transmission With Standard DFB Lasers , 2006, IEEE Photonics Technology Letters.

[6]  Ut-Va Koc,et al.  Coherent Receivers for Practical Optical Communication Systems , 2007, OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference.