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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 18 — Sep. 15, 2006
  • pp: 2716–2718

Condition for the realization of a temperature-insensitive long-period waveguide grating

Qing Liu, Kin Seng Chiang, and Kar Pong Lor  »View Author Affiliations


Optics Letters, Vol. 31, Issue 18, pp. 2716-2718 (2006)
http://dx.doi.org/10.1364/OL.31.002716


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Abstract

We analyze the condition for achieving a temperature-insensitive resonance wavelength of a long-period grating formed in a channel waveguide. We find that by controlling the waveguide cladding thickness, zero temperature sensitivity can be achieved with core and cladding materials that have significantly different thermo-optic coefficients. To verify our finding, we design a polymer long-period waveguide grating (LPWG) according to the zero-sensitivity condition, where the thermo-optic coefficient of the core is twice that of the cladding. The temperature sensitivity of the fabricated grating is within ± 0.15 nm ° C over a temperature range of 15 ° C , which is more than an order of magnitude lower than those of previously reported LPWGs fabricated with the same materials.

© 2006 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(250.5460) Optoelectronics : Polymer waveguides

ToC Category:
Integrated Optics

History
Original Manuscript: May 25, 2006
Revised Manuscript: July 2, 2006
Manuscript Accepted: July 7, 2006
Published: August 25, 2006

Citation
Qing Liu, Kin Seng Chiang, and Kar Pong Lor, "Condition for the realization of a temperature-insensitive long-period waveguide grating," Opt. Lett. 31, 2716-2718 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-18-2716


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References

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