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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 27 — Sep. 20, 2013
  • pp: 6735–6743

Anamorphic transformation and its application to time–bandwidth compression

Mohammad H. Asghari and Bahram Jalali  »View Author Affiliations


Applied Optics, Vol. 52, Issue 27, pp. 6735-6743 (2013)
http://dx.doi.org/10.1364/AO.52.006735


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Abstract

A general method for compressing the modulation time–bandwidth product of analog signals is introduced. As one of its applications, this physics-based signal grooming, performed in the analog domain, allows a conventional digitizer to sample and digitize the analog signal with variable resolution. The net result is that frequency components that were beyond the digitizer bandwidth can now be captured and, at the same time, the total digital data size is reduced. This compression is lossless and is achieved through a feature selective reshaping of the signal’s complex field, performed in the analog domain prior to sampling. Our method is inspired by operation of Fovea centralis in the human eye and by anamorphic transformation in visual arts. The proposed transform can also be performed in the digital domain as a data compression algorithm to alleviate the storage and transmission bottlenecks associated with “big data.”

© 2013 Optical Society of America

OCIS Codes
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: May 29, 2013
Revised Manuscript: July 29, 2013
Manuscript Accepted: August 4, 2013
Published: September 16, 2013

Citation
Mohammad H. Asghari and Bahram Jalali, "Anamorphic transformation and its application to time–bandwidth compression," Appl. Opt. 52, 6735-6743 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-27-6735


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