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Optical Subcarrier Generation Long Xiao 03/12/2003
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Outline Optical Subcarrier generate Optical phase locked loop (OPLL)
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Four Methods of Optical Generation of a Millimeter-wave subcarrier Direct modulation of a laser diode. External modulation. Laser mode locking. Heterodyning of two single-mode lasers.
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A Tunable Millimeter-Wave Optical Transmitter
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Photograph of Two Laser Module
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Spectrum of the Heterodyne Signal The 0.3 nm wavelength separation between the outputs of two microchip-lasers corresponds to 90 GHz heterodyne signal.
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Performance of the Heterodyne System Continuous tuning range (CTR): 45 GHz. Sensitivity: 13.4 MHz/ V. Phase noise: -90 dBc/Hz at 10 kHz offset.
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Diagram of the Optical Phase Locked Loop With Reference Signal Master Laser Slave Laser Photodector Reference Signal Loop Filter Optical Coupler
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Diagram of the Phase Locked Loop With Delay Line
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Packaged Optical Phase Locked Loop
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References [1]Y. LI, A. J. C. Vieira, S. M. Goldwasser, P. R. Herczfeld, “Rapidly Tunable Millimeter-Wave Optical Transmitter for Lidar/Radar”, IEEE Transactions on Microwave Theory and Techniques, special issue on microwave and millimeter-wave photonics, Vol. 49, No. 10, pp. 2048-2054, October 2001. [2]Y. Li, S. Goldwasser, P. R. Herczfeld, “Optical Generated Dynamically Tunable,Low Noise Millimeter Wave Signals Using Microchip Solid Satte Lasers. [3] Yao, X. Steve, et al, “Optoelectronic oscillator for photonic systems”, IEEE Journal of Quantum Electronics, v32, n7, pp 1141-1149, Jul, 1996. [4] Yao, X. Steve, et al, “Multiloop optoelectronic oscillator”, IEEE Journal of Quantum Electronics, v36, n1, pp 79-84, 2000. [5] R. T. Ramos, A. J. Seeds, “Delay, Linewidth and Bandwidth Limitations in Optical Phase-locked Loop Design”, Electronics Letters, Vol. 26, No. 6, pp 389-391, March 1990. [6] A. C. Bordonalli, C. Walton, A. J. Seeds, ”High-Performance Homodyne Optical Injection Phase-Lock Loop Using Wide-Linewidth Semiconductor Lasers”, IEEE Photonics Technology Letters, Vol. 8, No. 9, September 1996.
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References [7] R. T. Ramos and A. J. Seeds, “comparison between first-order and second-order optical phase-lock loops”, IEEE microwave and guided wave letters, vol. 4, no. 1. January 1994. [8] L. N. Langley, M. D. Elkin, C. Edge, M. J. Wale, U. Gliese, X. Huang, and A. J. Seeds, “packaged semiconductor laser optical phase-locked loop (OPLL) for Photonic generation, processing and transmission of microwave signals. IEEE Transcations on microwave theory and techniques, vol. 47, no. 7, July 1999. [9] L. G. Kazovsky, and D. A. Atlas, “A 1320 nm experimental optical phase-locked loop”, IEEE Photonics technology letters, vol. 1. No. 11, November 1989. [10]L. G. Kazovsky, and B. Jensen, “experimental relative frequency stabilization of a set of lasers using optical phase-locked loops”, IEEE Photonics technology letters, vol. 2. No. 7, July 1990. [11] L. G. Kazovsky, and D. A. Atlas, “A 1320-nm experimental optical phase-locked loop: performance investigation and PSK homodyne experiments at 140 Mb/s and 2 Gb/s”. Journal of Lightwave technology, vol. 8. No. 9. September 1990.
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