Biomedical subjects

Sang-Yung Shin

Publications and source records attributed to Sang-Yung Shin.

2 recordsLinked to original sources

PubMed2004

In-line polarization controller that uses a hollow optical fiber filled with a liquid crystal.

We demonstrate an in-line polarization controller based on a hollow optical fiber filled with a nematic liquid crystal by fabricating thin-film electrodes on the cladding of a fiber. The polarization controller consists of three control sections with fixed optic axes, which operate as phase retarders. The phase retardation in each section is controlled by the magnitude of the applied electric field. The full wave retardation voltage of the polarization controller is approximately 85 V.

Journal Article↗

PubMed2003

Mode-order converter in a multimode waveguide.

A novel device that converts the order of modes in an integrated-optic multimode waveguide was proposed and fabricated. The device consists of two mode splitters and tapered waveguides. Its operation at a wavelength of 1.55 microm was confirmed by observation of the output mode profiles. The cross talk measured by an indirect method was >10.2 dB. The excess loss with reference to a straight multimode waveguide was 1.5 dB, compared with the propagation loss of a straight multimode waveguide.

Journal Article↗