Optical signal processors based on a time-spectrum convolution
Optics Letters, Vol. 35, Issue 6, pp. 796-798 (2010)
http://dx.doi.org/10.1364/OL.35.000796
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Abstract
We show that a fiber-optics architecture conventionally used for microwave photonic filtering can implement a time-spectrum convolution (TSC) process of general interest for a wide range of fundamental optical signal processing and analysis operations. This process is practically implemented by temporally modulating a specially filtered broadband incoherent light source followed by propagation through a suitable linear dispersive medium. The TSC concept allows the time-domain realization of fundamental analog processing operations over both temporal and spectral intensity waveforms. Three particular, relevant signal-processing operations are proposed and experimentally demonstrated here to illustrate the broad potential of application of the TSC concept, namely time-integration, spectrum-integration, and time-frequency correlation of discrete binary codes.
© 2010 Optical Society of America
OCIS Codes
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(200.4740) Optics in computing : Optical processing
(060.5625) Fiber optics and optical communications : Radio frequency photonics
(320.7085) Ultrafast optics : Ultrafast information processing
ToC Category:
Spectroscopy
History
Original Manuscript: October 22, 2009
Revised Manuscript: January 20, 2010
Manuscript Accepted: January 26, 2010
Published: March 4, 2010
Citation
Yongwoo Park and José Azaña, "Optical signal processors based on a time-spectrum convolution," Opt. Lett. 35, 796-798 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-6-796
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