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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 15 — May. 20, 2009
  • pp: 2799–2810

Tunable photonic filters: a digital signal processing design approach

Le Nguyen Binh  »View Author Affiliations


Applied Optics, Vol. 48, Issue 15, pp. 2799-2810 (2009)
http://dx.doi.org/10.1364/AO.48.002799


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Abstract

Digital signal processing techniques are used for synthesizing tunable optical filters with variable bandwidth and centered reference frequency including the tunability of the low-pass, high-pass, bandpass, and bandstop optical filters. Potential applications of such filters are discussed, and the design techniques and properties of recursive digital filters are outlined. The basic filter structures, namely, the first-order all-pole optical filter (FOAPOF) and the first-order all-zero optical filter (FOAZOF), are described, and finally the design process of tunable optical filters and the designs of the second-order Butterworth low-pass, high-pass, bandpass, and bandstop tunable optical filters are presented. Indeed, we identify that the all-zero and all-pole networks are equivalent with well known principles of optics of interference and resonance, respectively. It is thus very straightforward to implement tunable optical filters, which is a unique feature.

© 2009 Optical Society of America

OCIS Codes
(070.2025) Fourier optics and signal processing : Discrete optical signal processing
(230.2285) Optical devices : Fiber devices and optical amplifiers

ToC Category:
Fourier Optics and Signal Processing

History
Original Manuscript: January 26, 2009
Revised Manuscript: March 30, 2009
Manuscript Accepted: April 17, 2009
Published: May 11, 2009

Citation
Le Nguyen Binh, "Tunable photonic filters: a digital signal processing design approach," Appl. Opt. 48, 2799-2810 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-15-2799


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