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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 13, Iss. 3 — Sep. 25, 2009
  • pp: 349–353

In-line Variable Optical Attenuator Based on the Bending of the Tapered Single Mode Fiber

Kwang-Taek Kim, Ji-Hoon Kang, Seung HwangBo, and Kie-Gon Im  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 13, Issue 3, pp. 349-353 (2009)

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We propose a simple in-line variable optical attenuator (VOA) based on the bending effect of tapered single mode fibers. The influence of the taper structure and the reflective index of the external medium surrounding the taper region on the bending loss of the tapered fiber have been investigated experimentally. An attenuation range exceeding 35 dB and a very low excess loss of < 0.2 dB at 1550 nm were achieved. The measured polarization dependent loss of the present VOA at the attenuation level of 10 dB, 20 dB, and 30 dB were 0.1 dB, 0.2 dB, and 0.5 dB, respectively.

© 2009 Optical Society of Korea

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.2430) Fiber optics and optical communications : Fibers, single-mode

Original Manuscript: May 20, 2009
Revised Manuscript: July 3, 2009
Manuscript Accepted: July 6, 2009
Published: September 25, 2009

Kwang-Taek Kim, Ji-Hoon Kang, Seung HwangBo, and Kie-Gon Im, "In-line Variable Optical Attenuator Based on the Bending of the Tapered Single Mode Fiber," J. Opt. Soc. Korea 13, 349-353 (2009)

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