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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 28, Iss. 7 — Jul. 1, 2011
  • pp: 1685–1692

Optical pulse propagation in dynamic Fabry–Perot resonators

Yuzhe Xiao, Drew N. Maywar, and Govind P. Agrawal  »View Author Affiliations


JOSA B, Vol. 28, Issue 7, pp. 1685-1692 (2011)
http://dx.doi.org/10.1364/JOSAB.28.001685


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Abstract

We present a simple and intuitive model based on the impulse response of linear electrical systems for describing the propagation of optical pulses through a dynamic Fabry–Perot resonator whose refractive index changes with time. Our model shows that the adiabatic wavelength conversion process in resonators results from a scaling of the round-trip time with index changes. For pulses longer than the cavity round-trip time, we find that more energy can be transferred to the new wavelength when the input pulses are slightly detuned from the cavity resonance and the refractive index does not change too rapidly. In fact, the optimum duration of index changes scales with the photon lifetime of the resonator. We describe the evolution of the shape and spectrum of picosecond pulses inside a resonator under a variety of input conditions and with the magnitude and duration of index variations. We also apply our general theory to the case of pulses whose widths are shorter than the round-trip time and derive an analytical expression for the output field under quite general conditions. This analysis reveals a shifting of the spectral comb as well as compression of the temporal pulse train that depends on the both the magnitude and sign of the index change. Our results should find applications in the area of optical signal processing using resonant photonic structures.

© 2011 Optical Society of America

OCIS Codes
(320.5540) Ultrafast optics : Pulse shaping
(350.4238) Other areas of optics : Nanophotonics and photonic crystals
(130.7405) Integrated optics : Wavelength conversion devices

ToC Category:
Integrated Optics

History
Original Manuscript: April 6, 2011
Manuscript Accepted: May 16, 2011
Published: June 14, 2011

Citation
Yuzhe Xiao, Drew N. Maywar, and Govind P. Agrawal, "Optical pulse propagation in dynamic Fabry–Perot resonators," J. Opt. Soc. Am. B 28, 1685-1692 (2011)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-28-7-1685

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