Transcript Document 7362688

Optical Subcarrier Generation
Long Xiao
03/12/2003
Outline
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Optical Subcarrier generate
Optical phase locked loop (OPLL)
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.
A Tunable Millimeter-Wave Optical
Transmitter
Photograph of Two Laser Module
Spectrum of the Heterodyne Signal
The 0.3 nm wavelength
separation between the
outputs of two
microchip-lasers
corresponds to 90 GHz
heterodyne signal.
Performance of the Heterodyne
System
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Continuous tuning
range (CTR): 45
GHz.
Sensitivity: 13.4
MHz/ V.
Phase noise: -90
dBc/Hz at 10 kHz
offset.
Diagram of the Optical Phase
Locked Loop With Reference Signal
Master
Laser
Optical
Coupler
Photodector
Slave
Laser
Loop
Filter
Reference
Signal
Diagram of the Phase Locked Loop
With Delay Line
Output
Tunable
optical/millimeter
wave transmitter
Photodetector
Loop
filter
X
Photodetector
Packaged Optical Phase Locked
Loop
References
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[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.
References
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[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.