Humidity sensor based on photonic crystal fibre interferometer
A photonic crystal fibre interferometer that operates in reflection mode for humidity detection is presented for the first time, which has the advantage that it does not require the use of any hygroscopic material. The fabrication of the sensor head is therefore simple since it only involves cleaving and splicing. The all-silica nature of the device has potential for many applications. © 2010 The Institution of Engineering and Technology.
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