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어븀 첨가 광섬유의 증폭 자발 방출을 이용한 저온 측정
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- Authors
- 이용욱
- Issue Date
- 2007-11
- Citation
- 전기학회논문지, v.56, no.11, pp.1992-1994
- ISSN
- 1975-8359
- Publisher
- 대한전기학회 (KIEE)
- Language
- Korean
- Type
- Journal Article
- Abstract
- In this paper we propose a cryogenic sensor system which can measure the temperature at higher resolution at low temperature using temperature-dependent amplified spontaneous emission of erbium-doped fiber pumped by a 1480 nm laser diode. The measurement resolution of the sensor system could be enhanced through the modulation of injection current of the pump laser diode. The measurement resolution considering the fluctuation of the light source in the sensor system was ∼0.4 K in the room temperature regime and ∼0.07 K in the liquid nitrogen temperature regime.
- KSP Keywords
- Erbium-doped fiber, Injection current, Laser diode(LD), Light sources, Liquid nitrogen temperature, Low temperature(LT), Measurement resolution, Pump laser, Room-temperature, Sensor system, Temperature regime