Abstract

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

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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]

2006 (4)

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]

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).

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]

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]

2005 (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]

2004 (1)

W. Lee and P. J. Delfyett, "Dual mode injection locking of two independent modelocked semiconductor lasers," IEE Electronics Letters 40, 1182- 1183 (2004).
[CrossRef]

1985 (1)

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]

Abbas, G. L.

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]

Agarwal, A.

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]

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]

Banwell, T.

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]

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]

Chan, V. W. S.

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]

Chen, W.

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]

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]

Choi, M-T.

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]

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).

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]

Chu, S.

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]

Davidson, R.

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]

Delfyett, P.

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]

Delfyett, P. J.

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]

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).

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]

W. Lee and P. J. Delfyett, "Dual mode injection locking of two independent modelocked semiconductor lasers," IEE Electronics Letters 40, 1182- 1183 (2004).
[CrossRef]

Donovan, K.

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]

Etemad, S.

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]

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).

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]

Galli, S.

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]

Gee, S.

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]

Gill, D.

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]

Hryniewicz, J.

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]

Izadpanah, H.

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]

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).

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]

Jackel, J.

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]

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]

Johnson, F.

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]

King, O.

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]

Lee, W.

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]

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).

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]

W. Lee and P. J. Delfyett, "Dual mode injection locking of two independent modelocked semiconductor lasers," IEE Electronics Letters 40, 1182- 1183 (2004).
[CrossRef]

Little, B.

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]

Menendez, R.

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]

Menendez, R. C.

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]

Ozharar, S.

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]

Quinlan, F.

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]

Toliver, P.

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]

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]

Yee, T. K.

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]

Yilmaz, T.

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]

Young, J.

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]

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]

IEE Electron. Lett. (1)

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]

IEE Electronics Letters (1)

W. Lee and P. J. Delfyett, "Dual mode injection locking of two independent modelocked semiconductor lasers," IEE Electronics Letters 40, 1182- 1183 (2004).
[CrossRef]

IEEE J. of Lightwave Technol. (4)

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]

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]

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]

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]

OSA Topical Meetings (1)

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).

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Figures (8)

Fig. 1.
Fig. 1.

Schematic of 10 GHz external cavity grating-coupled MSL system and a 20 GHz spectral de-interleaver (L: lens, S: optical sampler, G: grating, M: mirror)

Fig. 2.
Fig. 2.

Optical spectra: (a) optical spectrum of the 10 GHz hybridly MSL (b) optical spectrum of 10 GHz hybridly MSL after filtering through the 20 GHz de-interleaver.

Fig. 3.
Fig. 3.

Sampling oscilloscope traces: (a) pulse train of the 10 GHz hybridly MSL (b) 20-GHz pulse train after the 20 GHz de-interleaver (detector bandwidth is 50 GHz).

Fig. 4.
Fig. 4.

Intensity autocorrelation measurements: (a) the optical pulse from the 10 GHz hybridly MSL (b) the optical pulse after 20 GHz de-interleaver

Fig. 5.
Fig. 5.

Schematic of experimental setup for CPD and MCCD (TBPF: tunable bandpass filter, PC: polarization controller, F1 and F2: fiber to free space launcher, M1~M6: mirror, HP: half wave plate, LP: linear polarizer, LPF: electrical lowpass filter, OSC: oscilloscope)

Fig. 6.
Fig. 6.

Schematic of homodyne process in the CPD and the MCCD (BS: beam splitter, M1 and M2: mirror, D1 and D2: photodetector).

Fig. 7.
Fig. 7.

SNR measurements and the corresponding eye diagrams of CPD and MCCD

Fig. 8.
Fig. 8.

Coherent gain versus LO power measurement

Equations (4)

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V CD = 2 R R L R sig P LO sin ( Δ ϕ )
V DD = R R L P sig
G C V CD V DD
G C P LO

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