Experimental investigation of Sagnac beat signals using semiconductor fiber-optic ring laser gyroscope (S-FOG) based on semiconductor optical amplifier (SOA)

Shuichi Tamura, Keizo Inagaki, Hiroyuki Noto, Takahisa Harayama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

We are conducting research to confirm the performance of a semiconductor fiber-optic ring laser gyroscope (S-FOG) featuring a semiconductor in its laser cavity. This S-FOG consists of a semiconductor optical amplifier (SOA) as a gain medium, a polarization-maintaining fiber to make a ring cavity, and a directional coupler to take part of the optical power out of the cavity. One of the advantages of the S-FOG is the adaptability of the laser cavity, which allows us to examine many cases of S-FOG applications easily. In the first case, we observed that the S-FOG generated Sagnac beat signals whose peak frequency was proportional to the rotation rate when it rotated. In the second case, we changed the area surrounded by the ring cavity (the fiber) and its perimeter and maintained a near-fixed oscillation wavelength of the ring laser. In this case, all of our experimental results were in good agreement with theoretical calculations, within a few percent. In the third case, we changed the oscillation wavelength and fixed the shape of the ring cavity. In this case, our results were also in good agreement with theoretical calculations. In the fourth case, we examined the Sagnac beat spectrum generated by the S-FOG in detail. The linewidth of the Sagnac beat spectrum increases as the area bounded by the optical path in the ring cavity becomes smaller, or as the length of the cavity becomes shorter. Our experimental results show that the S-FOG works as a gyro and that there exists practical potential for a semiconductor ring laser gyro.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6770
DOIs
Publication statusPublished - 2007
Externally publishedYes
EventFiber Optic Sensors and Applications V - Boston, MA
Duration: 2007 Sep 102007 Sep 12

Other

OtherFiber Optic Sensors and Applications V
CityBoston, MA
Period07/9/1007/9/12

Fingerprint

laser gyroscopes
Ring lasers
Semiconductor optical amplifiers
Gyroscopes
ring lasers
light amplifiers
Fiber optics
fiber optics
synchronism
Semiconductor materials
cavities
Laser resonators
rings
laser cavities
Polarization-maintaining fiber
Wavelength
oscillations
Directional couplers
fibers
directional couplers

Keywords

  • Gyroscope
  • Optical fiber
  • Ring laser
  • S-FOG
  • Sagnac beat spectrum
  • Sagnac effect
  • Scale factor
  • SOA

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Tamura, S., Inagaki, K., Noto, H., & Harayama, T. (2007). Experimental investigation of Sagnac beat signals using semiconductor fiber-optic ring laser gyroscope (S-FOG) based on semiconductor optical amplifier (SOA). In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6770). [677014] https://doi.org/10.1117/12.734200

Experimental investigation of Sagnac beat signals using semiconductor fiber-optic ring laser gyroscope (S-FOG) based on semiconductor optical amplifier (SOA). / Tamura, Shuichi; Inagaki, Keizo; Noto, Hiroyuki; Harayama, Takahisa.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6770 2007. 677014.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tamura, S, Inagaki, K, Noto, H & Harayama, T 2007, Experimental investigation of Sagnac beat signals using semiconductor fiber-optic ring laser gyroscope (S-FOG) based on semiconductor optical amplifier (SOA). in Proceedings of SPIE - The International Society for Optical Engineering. vol. 6770, 677014, Fiber Optic Sensors and Applications V, Boston, MA, 07/9/10. https://doi.org/10.1117/12.734200
Tamura, Shuichi ; Inagaki, Keizo ; Noto, Hiroyuki ; Harayama, Takahisa. / Experimental investigation of Sagnac beat signals using semiconductor fiber-optic ring laser gyroscope (S-FOG) based on semiconductor optical amplifier (SOA). Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6770 2007.
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