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A. Kung, P.-A. Nicati and P. A. Robert, “Reciprocal and Quasi-Reciprocal Brillouin Fiber-Optic Current Sensors,” IEEE Photonics Technology Letters, Vol. 8, No. 12, 1996, pp. 1680-1682. doi:10.1109/68.544717

has been cited by the following article:

• TITLE: Semiconductor Optical Amplifier (SOA)-Fiber Ring Laser and Its Application to Stress Sensing

  AUTHORS: Yoshitaka Takahashi, Shinji Sekiya, Tatsuro Suemune

  KEYWORDS: Fiber Laser, Fiber Sensor, Ring Laser, Semiconductor Optical Amplifier, Optical Sensor

  JOURNAL NAME: Optics and Photonics Journal, Vol.1 No.4, December 7, 2011

  ABSTRACT: We have developed a novel optical fiber ring laser using a semiconductor optical amplifier (SOA) as the gain medium, and taking advantage of polarization anisotropy of its gain. The frequency difference of the bi-directional laser is controlled by birefringence which is introduced in the ring laser cavity. The beat frequency generated by combining two counter-propagating oscillations is proportional to the birefringence, the fiber ring laser of the present study is, therefore, applicable to the fiber sensor. The sensing signal is obtained in a frequency domain with the material which causes the retardation change by a physical phenomenon to be measured. For the application to stress sensing, the present laser was investigated with a photoelastic material.