Biomedical subjects

Kazuo Hotate

Publications and source records attributed to Kazuo Hotate.

2 recordsLinked to original sources

PubMed2007

25 GHz bandwidth Brillouin slow light in optical fibers.

Broadband slow light is demonstrated by using stimulated Brillouin scattering in optical fibers based on a double Brillouin pump, the peaks of which are spectrally separated by twice the Brillouin frequency. The loss spectrum generated by one of the pump waves is fully compensated by the gain spectrum of the other one, which permits the enlargement of the bandwidth to 25 GHz and a variable time delay of up to 10.9 ps with 37 ps pulses.

Journal Article↗

PubMed2006

Distributed strain measurement with millimeter-order spatial resolution based on Brillouin optical correlation domain analysis.

Distributed strain sensing with millimeter-order spatial resolution is demonstrated in optical fibers based on Brillouin optical correlation domain analysis. A novel beat lock-in detection scheme is introduced to suppress background noises coming from the reflection of Brillouin pump waves. The Brillouin frequency shifts of 3 mm fiber sections are successfully measured with a theoretical spatial resolution of 1.6 mm.

Journal Article↗