Title :
Variable frequency lock-in detection for Brillouin optical correlation domain analysis
Author :
Jeong, Jiho ; Lee, Kwanil ; Song, Kwang Yong ; Jeong, Je-Myung ; Lee, Sang Bae
Author_Institution :
Photonics Res. Lab., Korea Inst. of Sci. & Technol. (KIST), Seoul, South Korea
Abstract :
We propose and experimentally demonstrate a variable frequency lock-in detection technique for Brillouin optical correlation domain analysis (BOCDA). The beat noise appearing in the acquisition of Brillouin gain spectrum by ordinary lock-in detection is investigated, and a method of varying the chopping frequency is newly applied to minimize the beat noise.
Keywords :
Brillouin spectra; optical correlation; Brillouin gain spectrum acquisition; Brillouin optical correlation domain analysis; beat noise; variable frequency lock-in detection; Decision support systems; IP networks;
Conference_Titel :
Opto-Electronics and Communications Conference (OECC), 2011 16th
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-61284-288-2
Electronic_ISBN :
978-986-02-8974-9
