Optical-Fiber Accelerometer Array: Nano-g Infrasonic Operation in a Passive 100 km Loop

Autor:	Ian C. M. Littler, Malcolm B. Gray, Jong H. Chow, Timothy T.-Y. Lam, Daniel A. Shaddock, David E. McClelland
Rok vydání:	2010
Předmět:	Physics Optical fiber Dynamic range Infrasound Acoustics Bandwidth (signal processing) Acoustic wave Accelerometer Seismic wave law.invention law Nano Electrical and Electronic Engineering Instrumentation
Zdroj:	IEEE Sensors Journal. 10:1117-1124
ISSN:	1558-1748 1530-437X
Popis:	In this paper, an all-optical accelerometer array system is presented, ideally suited for permanent seismic seabed arrays and passive surveillance. A directly measured accelerometer resolution of better than 60 ng/?Hz (-145 dB/ reg/?Hz) down to 10 Hz is achieved for all channels in a completely passive 100 km fiber loop. The detection bandwidth is chosen to be from 10 to 300 Hz, with a closed-loop dynamic range of 120 dB. The crosstalk between channels spaced by 100 GHz is better than -64 dB.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9a9453749a24f12d6cef144bd73a33af https://doi.org/10.1109/jsen.2009.2039128 Zobrazit plný text záznamu