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

Sun Do Lim | Zendy; Jae Gu Kim | Zendy; Kwanil Lee | Zendy; Sang Bae Lee | Zendy; Byoung Yoon Kim | Zendy

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

Author(s) -

Sun Do Lim,

Jae Gu Kim,

Kwanil Lee,

Sang Bae Lee,

Byoung Yoon Kim

Publication year - 2009

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.17.018449

Subject(s) - materials science , optics , fabrication , femtosecond , fiber laser , laser , core (optical fiber) , optical fiber , optoelectronics , laser ablation , fiber , single mode optical fiber , composite material , wavelength , medicine , physics , alternative medicine , pathology

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 25 dB 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 1.8 dB with non-resonance light suppression greater than 23 dB.

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