Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Long-period fiber gratings fabricated by use of defocused C O 2 laser beam for polarization-dependent loss enhancement

Not Accessible

Your library or personal account may give you access

Abstract

An alternative of the long-period fiber grating (LPFG) fabrication method has been developed in this work by use of defocused CO2 laser pulse scanning, which is achieved by moving the laser beam focus plane slightly away from the fiber cladding surface. By increasing the distance shift from the cladding surface, the area with refractive index change also increases on the side with laser irradiation, which leads to an apparent mode field profile distortion at the resonant wavelength of the LPFG. Such a distortion in the mode field profile significantly increases the polarization-dependent loss of the LPFG. Moreover, for the cascaded LPFGs fabricated by use of this technique, the maximum polarization-dependent loss obtained can be largely increased from 7to17.8dB, with a maximum dip in the wavelength change of 0.45nm.

© 2009 Optical Society of America

Full Article  |  PDF Article
More Like This
Effect of asymmetric stress relaxation on the polarization-dependent transmission characteristics of a CO2 laser-written long-period fiber grating

Hyung Suk Ryu, Yongwoo Park, Seong Tae Oh, Youngjoo Chung, and Dug Young Kim
Opt. Lett. 28(3) 155-157 (2003)

Fabrication of helical long-period fiber gratings by use of a CO2 laser

Seungtae Oh, Kyung Rok Lee, Un-Chul Paek, and Youngjoo Chung
Opt. Lett. 29(13) 1464-1466 (2004)

Polarization-dependent loss and birefringence in long-period fiber gratings

Brent L. Bachim and Thomas K. Gaylord
Appl. Opt. 42(34) 6816-6823 (2003)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved