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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 18 — Sep. 4, 2006
  • pp: 8367–8381

Passive and periodically ultra fast RF-photonic spectral scanner

Zeev Zalevsky, Amir Shemer, David Mendlovic, and Shlomo Zach  »View Author Affiliations


Optics Express, Vol. 14, Issue 18, pp. 8367-8381 (2006)
http://dx.doi.org/10.1364/OE.14.008367


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Abstract

In this paper we present passive photonic device performing periodic and ultra fast spectral analysis of RF signals modulated on optical carrier. The spectral scanning is demonstrated in two approaches. First by passing the light through a couple of special bulk periscopes that split the beam into a set of parallel channels or combine a set of channels into one beam. One surface of each periscope is coated with high reflectivity coating such that the set of parallel beams travel several times through the structure due to their partial back reflection in each passage through the periscope. In each passage in the system the channel experience different delay in comparison with the original signal. This relative delay is accumulative and it is generated by placing glass bars with different length for each one of the channels. This structure realizes Finite Impulse Response (FIR) filter that performs the spectral scanning. The second approach involves similar configuration but it is realized with fibers and Y couplers rather than bulk optics. In this case the filter that performs the spectral scanning is an Infinite Impulse Response (IIR) filter having much sharper spectral sampling capability.

© 2006 Optical Society of America

OCIS Codes
(230.2090) Optical devices : Electro-optical devices
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Optical Devices

History
Original Manuscript: March 7, 2006
Revised Manuscript: May 28, 2006
Manuscript Accepted: June 7, 2006
Published: September 1, 2006

Citation
Zeev Zalevsky, Amir Shemer, David Mendlovic, and Shlomo Zach, "Passive and periodically ultra fast RF-photonic spectral scanner," Opt. Express 14, 8367-8381 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-18-8367


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