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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 24 — Nov. 22, 2010
  • pp: 25089–25101

Tunable spectral shifts and spectral switches by controllable phase modulation

Mohammad Amiri, Mohammad Taghi Tavassoly, Hazhir Dolatkhah, and Zahra Alirezaei  »View Author Affiliations


Optics Express, Vol. 18, Issue 24, pp. 25089-25101 (2010)
http://dx.doi.org/10.1364/OE.18.025089


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Abstract

In this work, we offer a novel and flexible approach of spectral switches which can be handled more simply by controlling the phase of the diffracted light field of a completely spatially coherent incident beam with spectral profile from a one-dimensional phase step. This scheme has the benefit of easy implementation by simply varying the height of a one-dimensional phase step which causes spectral switches to occur when the step height reaches certain critical values without modulating any properties of the light source. To illustrate this effect, an explicit and analytical expression at an observation point corresponding to the step edge is obtained and some numerical examples are given and examined experimentally. Finally, based on the obtained results, it is shown that this method with the capability of very short response time can be easily applied to information encoding and transmission.

© 2010 Optical Society of America

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(060.5060) Fiber optics and optical communications : Phase modulation
(070.4560) Fourier optics and signal processing : Data processing by optical means

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 18, 2010
Revised Manuscript: August 7, 2010
Manuscript Accepted: August 7, 2010
Published: November 17, 2010

Citation
Mohammad Amiri, Mohammad T. Tavassoly, Hajir Dolatkhah, and Zahra Alirezaei, "Tunable spectral shifts and spectral switches by controllable phase modulation," Opt. Express 18, 25089-25101 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-24-25089


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