Browsing by Author "Tsai, Meng-Chang"

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Fabrication of complex fiber grating structures by use of sequential writing with polarization control
(2005-07-14)
Chuang, Kai-Ping
;
Sheu, Lih-Gen
;
Tsai, Meng-Chang
;
Lai, Yinchieh
The present invention provides a fabrication method of complex fiber grating structures that can be combined with prior fabrication methods including a phasemask or a two-beam interferometer. By using a rotatable half-wave plate with a polarization beam splitter in the optical path and precisely scanning the relative fiber position, we can expose true complex fiber gratings in a single scan by simultaneously rotating the angle of the half-wave plate.
Fabrication of true apodized fiber bragg grating using a new two-beam interferometer with polarization control
(2005-07-14)
Chuang, Kai-Ping
;
Sheu, Lih-Gen
;
Tsai, Meng-Chang
;
Lai, Yinchieh
The present invention provides a two-beam interference exposure system that can be simply adjusted by rotating only one mirror. By placing a half-wave plate in one of the interference arms and precisely scanning the relative fiber position, the present invention can expose true apodized fiber Bragg gratings in a single scan by simultaneously rotating the angle of the half-wave plate. By rotationally switching the fast and slow axes of the half-wave plate, the present invention can also expose n-phase-shifted fiber grating by the same system.