Browsing by Author "Chuang, KP"

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Fiber bragg grating dispersion compensator by single-period overlap-step-scan exposure
(2003-07-01)
Sheu, LG
;
Chuang, KP
;
Lai, YC
;
光電工程學系
;
Department of Photonics
We theoretically demonstrate that a high-quality fiber Bragg grating dispersion compensator can be fabricated by a properly designed single-period overlap-step-scan exposure method. A practical design example and a detailed tolerance analysis of this new fabrication method are given.
Fiber Bragg grating sequential UV-writing method with real-time interferometric side-diffraction position monitoring
(2005-05-16)
Hsu, KC
;
Sheu, LG
;
Chuang, KP
;
Chang, SH
;
Lai, YC
This work presents a new sequential UV-writing procedure for fabricating long fiber Bragg grating (FBG) devices. To real-time accurately align the position of every exposed FBG section prior to UV exposure, a single-period reference fiber grating with strong refractive index modulation is probed by applying an interferometric side-diffraction method to measure the grating phase as the position reference. In this way the overlapped FBG sections can be connected section-by-section without obvious phase errors, even when the written index-modulation is weak. (C) 2005 Optical Society of America.
Pure apodized phase-shifted fiber Bragg gratings fabricated by a two-beam interferometer with polarization control
(2004-03-01)
Chuang, KP
;
Lai, YC
;
Sheu, LG
;
光電工程學系
;
Department of Photonics
A new technique based on a two-beam interferometer with polarization control for fabricating advanced fiber Bragg grating (FBG) devices is demonstrated. By simultaneously rotating the angle of the half-wave plate, pure apodized and pi-phase-shifted FBGs can be fabricated in a single scan.