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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 5 — Mar. 5, 2007
  • pp: 2098–2105

Coherent pulse detection and multi-channel coherent detection based on a single balanced homodyne receiver

Wangkuen Lee, Hoss Izadpanah, Peter J. Delfyett, Ron Menendez, and Shahab Etemad  »View Author Affiliations

Optics Express, Vol. 15, Issue 5, pp. 2098-2105 (2007)

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The performance of coherent pulse detection (CPD) and multi-channel coherent detection (MCCD) based on a single dual-balanced homodyne receiver was experimentally demonstrated using a grating-coupled hybridly mode-locked semiconductor laser. Compared with direct detection, a high coherent gain of over 10 dB, as well as an SNR improvement of over 5 dB, was obtained in both detection schemes. Our experimental results have confirmed that the coherent detection processes in CPD and MCCD are nearly the same based on a square-root LO power dependence. Nevertheless, the MCCD scheme has shown an advantage in a path-length error over the CPD scheme, revealing 2~3 dB improvement in sensitivities.

© 2007 Optical Society of America

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2920) Fiber optics and optical communications : Homodyning
(140.4050) Lasers and laser optics : Mode-locked lasers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: February 7, 2007
Manuscript Accepted: February 11, 2007
Published: March 5, 2007

Wangkuen Lee, Hoss Izadpanah, Peter J. Delfyett, Ron Menendez, and Shahab Etemad, "Coherent pulse detection and multi-channel coherent detection based on a single balanced homodyne receiver," Opt. Express 15, 2098-2105 (2007)

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  1. R. C. Menendez, P. Toliver, S. Galli, A. Agarwal, T. Banwell, J. Jackel, J. Young, and S. Etemad, "Network applications of cascaded passive code translation for WDM-compatible spectrally phase-encoded optical CDMA," IEEE J. of Lightwave Technol. 23, 3219-3231 (2005). [CrossRef]
  2. A. Agarwal, P. Toliver, R. Menendez, S. Etemad, J. Jackel, J. Young, T. Banwell, B. Little, S. Chu, W. Chen, W. Chen, J. Hryniewicz, F. Johnson, D. Gill, O. King, R. Davidson, K. Donovan, and P. Delfyett, "Fully programmable ring-resonator-based integrated photonic circuit for phase coherent applications," IEEE J. of Lightwave Technol. 24, 77-86 (2006). [CrossRef]
  3. W. Lee, M-T. Choi, H. Izadpanah, P. J. Delfyett, and S. Etemad, "Coherent homodyne pulse detection for a spectral phase-encoded optical CDMA system using synchronized mode locked lasers," OAA/COTA 2006, OSA Topical Meetings,  CFD6, June 30, (2006).
  4. P. J. Delfyett, S. Gee, M-T. Choi, H. Izadpanah, W. Lee, S. Ozharar, F. Quinlan, and T. Yilmaz, "Optical frequency combs from semiconductor lasers and applications in ultra wideband signal processing and communications," IEEE J. of Lightwave Technol. 24, 2701- 2719 (2006). [CrossRef]
  5. W. Lee and P. J. Delfyett, "Dual mode injection locking of two independent modelocked semiconductor lasers," IEE Electronics Letters 40, 1182- 1183 (2004). [CrossRef]
  6. G. L. Abbas, V. W. S. Chan, and T. K. Yee, "A dual-detector optical heterodyne receiver for local oscillator noise suppression," IEEE J. of Lightwave Technol. LT-3, 1110- 1122 (1985). [CrossRef]
  7. W. Lee, M-T. Choi, H. Izadpanah, and P. J. Delfyett, "Relative intensity noise characteristics of a frequency stabilized grating-coupled mode-locked semiconductor laser," IEE Electron. Lett. 42, 1156- 1157 (2006). [CrossRef]

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