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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 21 — Oct. 16, 2006
  • pp: 9955–9962

Voltage-controlled slow light in an integrated semiconductor structure with net gain

Filip Öhman, Kresten Yvind, and Jesper Mørk  »View Author Affiliations

Optics Express, Vol. 14, Issue 21, pp. 9955-9962 (2006)

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We demonstrate the use of coherent population oscillations (CPO) to realize a monolithically integrated semiconductor device which allows voltage controlled tuning of the group velocity corresponding to a phase shift of up to 55 degrees at a frequency of 10 GHz. By combining sections of slow and fast light, corresponding to absorption and gain, we demonstrate control of both the slow-down factor and the signal amplitude, which is important for applications as true-time delay in microwave photonics. The physics of CPO is discussed in relation to electromagnetically induced transparency (EIT). In particular, we demonstrate and explain the possibility of achieving transparency when using the effect of CPO despite the fact that it relies on only a partial saturation of an absorption line.

© 2006 Optical Society of America

OCIS Codes
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(230.4320) Optical devices : Nonlinear optical devices
(250.5980) Optoelectronics : Semiconductor optical amplifiers

ToC Category:
Optical Devices

Original Manuscript: August 29, 2006
Manuscript Accepted: October 4, 2006
Published: October 16, 2006

Filip Öhman, Kresten Yvind, and Jesper Mørk, "Voltage-controlled slow light in an integrated semiconductor structure with net gain," Opt. Express 14, 9955-9962 (2006)

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