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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 21 — Oct. 12, 2009
  • pp: 18449–18454

Fabrication of a highly efficient core-mode blocker using a femtosecond laser ablation technique

Sun Do Lim, Jae Gu Kim, Kwanil Lee, Sang Bae Lee, and Byoung Yoon Kim  »View Author Affiliations

Optics Express, Vol. 17, Issue 21, pp. 18449-18454 (2009)

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Abstract: We present a method for the fabrication of a highly efficient core-mode blocker based on a laser micromachining technique. The process for the fabrication is as follows. A micron-sized crater is made by irradiation of an ultra-short pulse laser on the end face of a single-mode fiber, and then a defect that acts as a core-mode blocker is formed by splicing the cratered fiber with a normal fiber. The attenuation of the core mode was adjustable up to 25dB according to the initial crater size and the splicing condition. An all-fiber acousto-optic tunable bandpass filter built with the core-mode blocker is also demonstrated, which exhibits a low insertion loss of 1.8dB with non-resonance light suppression greater than 23dB.

© 2009 OSA

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(140.3440) Lasers and laser optics : Laser-induced breakdown
(230.1040) Optical devices : Acousto-optical devices

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: July 22, 2009
Revised Manuscript: September 2, 2009
Manuscript Accepted: September 20, 2009
Published: September 28, 2009

Sun Do Lim, Jae Gu Kim, Kwanil Lee, Sang Bae Lee, and Byoung Yoon Kim, "Fabrication of a highly efficient core-mode blocker using a femtosecond laser ablation technique," Opt. Express 17, 18449-18454 (2009)

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