OSA's Digital Library

Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 6 — Mar. 15, 2010
  • pp: 796–798

Optical signal processors based on a time-spectrum convolution

Yongwoo Park and José Azaña  »View Author Affiliations

Optics Letters, Vol. 35, Issue 6, pp. 796-798 (2010)

View Full Text Article

Enhanced HTML    Acrobat PDF (347 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



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:

Original Manuscript: October 22, 2009
Revised Manuscript: January 20, 2010
Manuscript Accepted: January 26, 2010
Published: March 4, 2010

Yongwoo Park and José Azaña, "Optical signal processors based on a time-spectrum convolution," Opt. Lett. 35, 796-798 (2010)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. C. Dorrer, J. Opt. Soc. Am. B 21, 1417 (2004). [CrossRef]
  2. J. Capmany, B. Ortega, D. Pastor, and S. Sales, J. Lightwave Technol. 23, 702 (2005). [CrossRef]
  3. V. Torres-Company, J. Lancis, and P. Andrés, Opt. Commun. 281, 1438 (2008).
  4. C. Dorrer, Opt. Express 17, 3341 (2009). [CrossRef] [PubMed]
  5. Y. Park and J. Azaña, Opt. Lett. 34, 1156 (2009). [CrossRef] [PubMed]
  6. J. Azaña, Opt. Lett. 33, (2008). [PubMed]
  7. F. R. K. Chung, J. A. Salehi, and V. K. Wei, IEEE Trans. Inf. Theory 35, 595 (1989). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3

Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited