Acta Optica Sinica, Volume. 33, Issue 7, 706007(2013)
Preparation of All-Fiber Low-Pressure CO2 Gas Cell Based on Hollow-Core Photonic Crystal Fiber
A low-loss, compact, miniaturized and stable low-pressure CO2 cell is proposed based on hollow-core photonic crystal fiber (HC-PCF). In order to ensure the gas purity, the HC-PCF is firstly flushed with high-pressure high-purity CO2, and then connected with conventional optical fibers under the high-pressure environment. The insertion loss of HC-PCF gas cell is reduced efficiently by splicing one end of the HC-PCF to single-mode fiber (SMF) and connecting the other end of HC-PCF to multi-mode fiber with ceramic ferrule sleeve. By placing the HC-PCF into a vacuum chamber to decompress its pressure and subsequent sealing process, a HC-PCF low-pressure CO2 gas cell with the pressure less than 10 kPa is obtained. The insertion loss of this gas cell is approximately 3.5 dB, and the good air-tightness and long-term stability are observed. This kind of low-pressure HC-PCF gas cell may find broad applications in optical fiber gas sensing, laser frequency stabilization, and high resolution spectroscopy.
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Wang Haibin, Liu Ye, Wang Jinzu, Mao Qinghe. Preparation of All-Fiber Low-Pressure CO2 Gas Cell Based on Hollow-Core Photonic Crystal Fiber[J]. Acta Optica Sinica, 2013, 33(7): 706007
Category: Fiber Optics and Optical Communications
Received: Dec. 26, 2012
Accepted: --
Published Online: Jun. 7, 2013
The Author Email: Haibin Wang (fiber-optics@aiofm.ac.cn)