Browsing by Author "Tsai, S. K."

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Compact optical curvature sensor with a flexible microdisk laser on a polymer substrate
(2009-09-15)
Shih, M. H.
;
Hsu, K. S.
;
Kunag, Wan
;
Yang, Y. C.
;
Wang, Y. C.
We demonstrate a chip-scale compact optical curvature sensor. It consists of a low threshold InGaAsP microdisk laser on a flexible polydimethylsiloxane polymer substrate. The curvature dependence of lasing wavelength was characterized by bending the cavity at different bending radii. The measurements showed that the lasing wavelength decreases monotonously with an increasing bending curvature. A good agreement between experiment and three-dimensional finite-difference time-domain simulation was also obtained. The sensitivity of the compact device to the bending curvature is -23.7 nm/mm from the experiment. (C) 2009 Optical Society of America
Flexible compact microdisk lasers on a polydimethylsiloxane (PDMS) substrate
(2009-01-19)
Shih, M. H.
;
Hsu, S.
;
Wang, Y. C.
;
Yang, Y. C.
;
Tsai, S. K.
Compact microdisk cavities were fabricated on a polydimethylsiloxane substrate. The lasing of the flexible compact cavity was achieved with a low threshold power. The whispering-gallery mode of the microdisk was also characterized with three-dimensional finite-difference time-domain simulation. The curvature dependence in output power and threshold was also demonstrated by bending the microdisk cavity. (C) 2008 Optical Society of America
Flexible compact microdisk lasers on a polydimethylsiloxane (PDMS) substrate
(2009-01-19)
Shih, M. H.
;
Hsu, S.
;
Wang, Y. C.
;
Yang, Y. C.
;
Tsai, S. K.
Compact microdisk cavities were fabricated on a polydimethylsiloxane substrate. The lasing of the flexible compact cavity was achieved with a low threshold power. The whispering-gallery mode of the microdisk was also characterized with three-dimensional finite-difference time-domain simulation. The curvature dependence in output power and threshold was also demonstrated by bending the microdisk cavity. (C) 2008 Optical Society of America