| Title |
Cryogenic Temperature Measurement Using Amplified Spontaneous Emission of Erbium-Doped Fiber |
| Keywords |
Optical Fiber Sensor ; Temperature Sensor ; Cryogenic Temperature ; Erbium-Doped Fiber |
| 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. |