3 December 2014 Detection of optical circulator crosstalk based on signal modulation
Author Affiliations +
A novel method based on piezoelectric transducer (PZT) modulation for detecting the crosstalk of optical circulator has been demonstrated. In the experiment, the lightwave emitted from a low-noise single-frequency laser passed through the circulator, reflected on the surface of the PZT, and returned to the circulator again. The PZT can modulate the frequency of the lightwave reflected on it due to the Doppler effect. Then the crosstalk of the circulator is obtained by measuring the induced optical difference frequency based on a difference-frequency detection technology. The results show that this method is very effective in detecting weak crosstalk of circulator.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Qiu-feng Shao, Qiu-feng Shao, Qian Zhang, Qian Zhang, Rui Yang, Rui Yang, Heng Zhang, Heng Zhang, "Detection of optical circulator crosstalk based on signal modulation", Proc. SPIE 9297, International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors, 929739 (3 December 2014); doi: 10.1117/12.2075188; https://doi.org/10.1117/12.2075188


Non-Contact Laser Extensometer
Proceedings of SPIE (September 09 1987)
Displacement measurement based on laser Doppler effect
Proceedings of SPIE (October 02 2000)
VCSEL-based miniature laser-Doppler interferometer
Proceedings of SPIE (January 28 2008)

Back to Top