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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 23 — Dec. 1, 2007
  • pp: 3385–3387

Bandpass filter with adjustable bandwidth based on a press-induced long-period twisted holey-fiber grating

I. Torres-Gómez, A. Martínez-Ríos, D. E. Ceballos-Herrera, E. Mejía-Beltrán, and R. Selvas-Aguilar  »View Author Affiliations


Optics Letters, Vol. 32, Issue 23, pp. 3385-3387 (2007)
http://dx.doi.org/10.1364/OL.32.003385


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Abstract

A bandpass filter with adjustable bandwidth based on a press-induced long-period grating in a twisted holey fiber is presented. By twisting the holey fiber prior to the application of periodic pressure, each rejection band of the nontwisted induced long-period grating is split into two shifted rejection bands that move further apart as the twist ratio increases. This feature results in a wide bandpass filter with controllable bandwidth. A bandpass filter at 1523 nm with adjustable bandwidth from 15   to   65 nm with near-linear response and insertion loss lower than 0.7 dB is demonstrated. Additionally, the bandpass filter can be tuned over 100 nm .

© 2007 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2340) Fiber optics and optical communications : Fiber optics components
(230.3990) Optical devices : Micro-optical devices

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: June 27, 2007
Revised Manuscript: September 7, 2007
Manuscript Accepted: October 25, 2007
Published: November 16, 2007

Citation
I. Torres-Gómez, A. Martínez-Ríos, D. E. Ceballos-Herrera, E. Mejía-Beltrán, and R. Selvas-Aguilar, "Bandpass filter with adjustable bandwidth based on a press-induced long-period twisted holey-fiber grating," Opt. Lett. 32, 3385-3387 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-23-3385


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