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Photonic ultrawideband impulse radio generation and modulation over a fiber link using a phase modulator and a delay interferometer |
Optics Letters, Vol. 37, Issue 16, pp. 3471-3473 (2012)
http://dx.doi.org/10.1364/OL.37.003471
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Abstract
We propose and experimentally demonstrate a simple and flexible photonic scheme for generation and modulation of ultrawideband (UWB) using a phase modulator and a fiber delay interferometer (DI)-based multichannel frequency discrimination. By introducing a Gaussian signal to the phase modulator, the UWB polarity-switchable doublet pulses can be achieved by combining the pair of UWB monocycle pulses with inverted polarities at the DI outputs under proper time delay. Furthermore, the pulse shape modulation, pulse position modulation, and on–off keying can be performed by coding the electrical data patterns and adjusting the time delay between the two monocycle pulses. Only a laser source introduced in the architecture guarantees the excellent dispersion tolerance over 75 km optical fiber link for UWB pulse sequence, which has potential application in future high-speed UWB impulse radio over optical fiber access networks.
© 2012 Optical Society of America
OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(350.4010) Other areas of optics : Microwaves
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: April 13, 2012
Revised Manuscript: June 14, 2012
Manuscript Accepted: July 4, 2012
Published: August 15, 2012
Citation
Jing Shao and Junqiang Sun, "Photonic ultrawideband impulse radio generation and modulation over a fiber link using a phase modulator and a delay interferometer," Opt. Lett. 37, 3471-3473 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-16-3471
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