Wavelength–time domain transformation-based demodulator for wavelength-encoded optical sensor

Hui Ding; Fangxing Lyu; Chunxia Yue; Chunyang Han; Wei Ding; Xu Niu

doi:10.1117/1.OE.57.6.066111

15 June 2018 Wavelength–time domain transformation-based demodulator for wavelength-encoded optical sensor

Hui Ding, Fangxing Lyu, Chunxia Yue, Chunyang Han, Wei Ding, Xu Niu

Author Affiliations +

Optical Engineering, Vol. 57, Issue 6, 066111 (June 2018). https://doi.org/10.1117/1.OE.57.6.066111

Abstract

As for the issue of the rapid wavelength interrogation of optical fiber wavelength-encoded sensor, a demodulation method combining spectrum-to-time domain information mapping and photonics time stretch technology is proposed. Using group velocity dispersion effect of dispersive elements, the spectrum of optical pulse will be mapped to a temporal waveform whose intensity mimics the spectrum. The temporal waveform is further stretched in timescale so that it is slow enough to be captured by electronic analog-to-digital converter. The performance of the proposed demodulation method is experimentally demonstrated to demodulate a wavelength-encoded sensor.

Citation Download Citation

Hui Ding, Fangxing Lyu, Chunxia Yue, Chunyang Han, Wei Ding, and Xu Niu "Wavelength–time domain transformation-based demodulator for wavelength-encoded optical sensor," Optical Engineering 57(6), 066111 (15 June 2018). https://doi.org/10.1117/1.OE.57.6.066111

Received: 13 March 2018; Accepted: 1 June 2018; Published: 15 June 2018

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