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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea

| PUBLISHED BY THE OPTICAL SOCIETY OF KOREA

  • Vol. 8, Iss. 1 — Mar. 25, 2004
  • pp: 17–20

In-line Variable Attenuator Based on the Evanescent Wave Coupling Between a Side-polished Single-mode Fiber and an Index Matched Dielectric Plate

Kwang-Taek Kim and Hyo-Kyeom Kim  »View Author Affiliations


Journal of the Optical Society of Korea, Vol. 8, Issue 1, pp. 17-20 (2004)


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Abstract

An in-line variable attenuator has been proposed and demonstrated exploiting a side-polished single-mode (SM) fiber evanescently coupled with an index matched dielectric plate. The attenuation can be controlled by fine mechanical sliding of the index matched dielectric plate. We have achieved 49 ㏈ dynamic range and very low excess loss of 0.2 ㏈ at 1550 nm wavelength. The measured polarization dependent losses (PDL) were 0.1, 0.2, and 0.4 ㏈ at 10, 20, and 30 ㏈ attenuation, respectively. Wavelength sensitivity was measured to be -0.017/nm ㏈ at 20 ㏈ attenuation.

© 2004 Optical Society of Korea

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2370) Fiber optics and optical communications : Fiber optics sensors

History
Original Manuscript: October 9, 2003
Published: March 1, 2004

Citation
Kwang-Taek Kim and Hyo-Kyeom Kim, "In-line Variable Attenuator Based on the Evanescent Wave Coupling Between a Side-polished Single-mode Fiber and an Index Matched Dielectric Plate," J. Opt. Soc. Korea 8, 17-20 (2004)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-8-1-17


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References

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