All-optical ultrawideband monocycle generation utilizing gain saturation of a dark return-to-zero signal in a semiconductor optical amplifier
Optics Letters, Vol. 32, Issue 15, pp. 2158-2160 (2007)
http://dx.doi.org/10.1364/OL.32.002158
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Abstract
We demonstrate a simple and compact scheme to generate ultrawideband (UWB) monocycle pulses utilizing gain saturation of a dark return-to-zero (RZ) signal in a semiconductor optical amplifier (SOA). When optical pulses with a dark RZ format propagate through the SOA, the output power at the rising edge will be overamplified compared with that at other durations due to the gain unsaturation. As a result, the output pulses are monocyclelike. The UWB frequency spectra at different injected currents, different input pulse widths, and different input wavelengths are analyzed. Our experiments show that the monocycle generation has good tolerance to the SOA bias current and the input signal wavelength.
© 2007 Optical Society of America
OCIS Codes
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(250.5980) Optoelectronics : Semiconductor optical amplifiers
(350.4010) Other areas of optics : Microwaves
ToC Category:
Fourier Optics and Signal Processing
History
Original Manuscript: April 24, 2007
Revised Manuscript: May 31, 2007
Manuscript Accepted: June 2, 2007
Published: July 23, 2007
Citation
Jianji Dong, Xinliang Zhang, Jing Xu, and Dexiu Huang, "All-optical ultrawideband monocycle generation utilizing gain saturation of a dark return-to-zero signal in a semiconductor optical amplifier," Opt. Lett. 32, 2158-2160 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-15-2158
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