Browsing by Author "Hsu, Der-Yi"

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Highly sensitive asymmetric long period fiber grating over 1545 similar to 1650 nm using optical polymer on deep-ablated cladding
(2007)
Chen, Nan-Kuang
;
Hsu, Der-Yi
;
Chi, Sien
;
光電工程學系
;
Department of Photonics
We demonstrate high temperature-sensitive,wideband-tunable, laser-ablated asymmetric long period fiber gratings with optical polymer overlay. The temperature sensitivity call be as high as 15.8 nm/degrees C over a wide spectral range from 1545 to 1650 nm. (C)2007 Optical Society of America
Widely tunable asymmetric long-period fiber grating with high sensitivity using optical polymer on laser-ablated cladding
(2007-08-01)
Chen, Nan-Kuang
;
Hsu, Der-Yi
;
Chi, Sien
;
光電工程學系
;
Department of Photonics
We demonstrate high-efficiency, wideband-tunable, laser-ablated long-period fiber gratings that use an optical polymer overlay. Portions of the fiber cladding are periodically removed by CO2 laser pulses to induce periodic index changes for coupling the core mode into cladding modes. An optical polymer with a high thermo-optic coefficient with a dispersion distinct from that of silica is used on a deep-ablated cladding structure so that the effective indices of cladding modes become dispersive and the resonant wavelengths can be efficiently tuned. The tuning efficiency can be as high as 15.8 nm/degrees C, and the tuning range can be wider than 105 nm (1545-1650 nm). (C) 2007 Optical Society of America.