Electro-optic Kerr effects in optical fiber current sensors

Influence of Electro-optic Effect on Wave-guide Efficiency of Optical Fiber with Cladding Made of Uniaxial Crystal Materials

PIERS Online ◽

10.2529/piers060829092541 ◽

2006 ◽

Vol 2 (6) ◽

pp. 614-618 ◽

Cited By ~ 2

Author(s):

Shanglin Hou ◽

Chunlian Hu

Keyword(s):

Optical Fiber ◽

Uniaxial Crystal ◽

Wave Guide ◽

Electro Optic ◽

Uniaxial Crystal Materials

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Application for Power Equipment of Optical Fiber Current Sensors

The Review of Laser Engineering ◽

10.2184/lsj.41.5_320 ◽

2013 ◽

Vol 41 (5) ◽

pp. 320

Author(s):

Tatsushi YAMAGUCHI

Keyword(s):

Optical Fiber ◽

Power Equipment ◽

Current Sensors

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Application of Fiber Optic BOTDA Sensor for Fire Detection in a Building

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.321-323.212 ◽

2006 ◽

Vol 321-323 ◽

pp. 212-216

Author(s):

Il Bum Kwon ◽

Chi Yeop Kim ◽

Dae Cheol Seo

Keyword(s):

Temperature Distribution ◽

Optical Fiber ◽

Fiber Optic ◽

Smart Structures ◽

Fire Detection ◽

Fiber Optic Sensor ◽

Sensor System ◽

Real Time Processing ◽

Optic Sensor ◽

Electro Optic

Smart structures are to be possessed many functions to sense the external effects, such as seismic loads, temperature, and impact by some explosion, influenced on the safety of structures. This work was focused on the development of a sensing function of smart structures to get the temperature distribution on structures to detect fire occurrences. A fiber optic BOTDA (Brillouin Optical Time Domain Analysis) sensor system was developed to detect the fire occurrence by measuring the temperature distribution of a building’s exterior surfaces. This fiber optic sensor system was constructed with a laser diode and two electro-optic modulators, which made this system faster than systems using only one electro-optic modulator. The temperature distributed on an optical fiber can be measured by this fiber optic BOTDA sensor. An optical fiber, 1400 m in length, was installed on the surface of a building. Using real-time processing of the sensor system, we were able to monitor temperature distribution on the building’s surfaces, and changes in temperature distribution were also measured accurately with this fiber optic sensor.

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