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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 7 — Apr. 1, 2009
  • pp: 929–931

Microwave phase shifter with controllable power response based on slow- and fast-light effects in semiconductor optical amplifiers

Weiqi Xue, Salvador Sales, José Capmany, and Jesper Mørk  »View Author Affiliations


Optics Letters, Vol. 34, Issue 7, pp. 929-931 (2009)
http://dx.doi.org/10.1364/OL.34.000929


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Abstract

We suggest and experimentally demonstrate a method for increasing the tunable rf phase shift of semiconductor waveguides while at the same time enabling control of the rf power. This method is based on the use of slow- and fast-light effects in a cascade of semiconductor optical amplifiers combined with the use of spectral filtering to enhance the role of refractive index dynamics. A continuously tunable phase shift of 240 ° at a microwave frequency of 19 GHz is demonstrated in a cascade of two semiconductor optical amplifiers, while maintaining an rf power change of less than 1.6 dB . The technique is scalable to more amplifiers and should allow realization of an rf phase shift of 360°.

© 2009 Optical Society of America

OCIS Codes
(250.5980) Optoelectronics : Semiconductor optical amplifiers
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Optoelectronics

History
Original Manuscript: December 16, 2008
Revised Manuscript: February 20, 2009
Manuscript Accepted: February 24, 2009
Published: March 18, 2009

Citation
Weiqi Xue, Salvador Sales, José Capmany, and Jesper Mørk, "Microwave phase shifter with controllable power response based on slow- and fast-light effects in semiconductor optical amplifiers," Opt. Lett. 34, 929-931 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-7-929

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