Improvement of accuracy of angular velocity detection in semiconductor fiber-optic ring laser gyroscope

Tomoki Ishida, Shuichi Tamura, Satoshi Simada, Keizo Inagaki, Shigeru Saito, Takahisa Harayama

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

4 Citations (Scopus)

Abstract

A semiconductor fiber-optic ring laser gyroscope (S-FOG) consists of a semiconductor optical amplifier (SOA) and optical fiber to form a ring cavity. The fiber ring cavity enables larger sizes and smaller scattering, while the SOA gain is shared by the clockwise (CW) and counterclockwise (CCW) propagating modes. When the S-FOG is rotated, a new beat signal called the Sagnac beat frequency is observed. We investigated the effect of the fiber ring cavity's length on detection characteristics. Detection sensitivity was not dependent on the number of laps of fiber ring cavity. However, when the cavity length became longer, the linewidth of Sagnac beat became narrower, and then accuracy of angular velocity detection improved. The relation between the linewidth Av of the Sagnac beat and cavity length P was proved to be Δ≈ -1.86.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7004
DOIs
Publication statusPublished - 2008
Externally publishedYes
Event19th International Conference on Optical Fibre Sensors - Perth, WA
Duration: 2008 Apr 152008 Apr 18

Other

Other19th International Conference on Optical Fibre Sensors
CityPerth, WA
Period08/4/1508/4/18

Fingerprint

laser gyroscopes
Ring lasers
Gyroscopes
Angular velocity
ring lasers
angular velocity
Fiber optics
fiber optics
Semiconductor optical amplifiers
Semiconductor materials
Linewidth
cavities
Fibers
synchronism
rings
Laser modes
light amplifiers
fibers
Optical fibers
Scattering

Keywords

  • Beat frequency
  • Laser gyroscope
  • Linewidth
  • S-FOG
  • Sagnac effect
  • Scale factor
  • SOA

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Ishida, T., Tamura, S., Simada, S., Inagaki, K., Saito, S., & Harayama, T. (2008). Improvement of accuracy of angular velocity detection in semiconductor fiber-optic ring laser gyroscope. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7004). [700450] https://doi.org/10.1117/12.786142

Improvement of accuracy of angular velocity detection in semiconductor fiber-optic ring laser gyroscope. / Ishida, Tomoki; Tamura, Shuichi; Simada, Satoshi; Inagaki, Keizo; Saito, Shigeru; Harayama, Takahisa.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7004 2008. 700450.

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

Ishida, T, Tamura, S, Simada, S, Inagaki, K, Saito, S & Harayama, T 2008, Improvement of accuracy of angular velocity detection in semiconductor fiber-optic ring laser gyroscope. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 7004, 700450, 19th International Conference on Optical Fibre Sensors, Perth, WA, 08/4/15. https://doi.org/10.1117/12.786142
Ishida T, Tamura S, Simada S, Inagaki K, Saito S, Harayama T. Improvement of accuracy of angular velocity detection in semiconductor fiber-optic ring laser gyroscope. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7004. 2008. 700450 https://doi.org/10.1117/12.786142
Ishida, Tomoki ; Tamura, Shuichi ; Simada, Satoshi ; Inagaki, Keizo ; Saito, Shigeru ; Harayama, Takahisa. / Improvement of accuracy of angular velocity detection in semiconductor fiber-optic ring laser gyroscope. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7004 2008.
@inproceedings{8b5333b3acc848e6b20c30698ad0ac93,
title = "Improvement of accuracy of angular velocity detection in semiconductor fiber-optic ring laser gyroscope",
abstract = "A semiconductor fiber-optic ring laser gyroscope (S-FOG) consists of a semiconductor optical amplifier (SOA) and optical fiber to form a ring cavity. The fiber ring cavity enables larger sizes and smaller scattering, while the SOA gain is shared by the clockwise (CW) and counterclockwise (CCW) propagating modes. When the S-FOG is rotated, a new beat signal called the Sagnac beat frequency is observed. We investigated the effect of the fiber ring cavity's length on detection characteristics. Detection sensitivity was not dependent on the number of laps of fiber ring cavity. However, when the cavity length became longer, the linewidth of Sagnac beat became narrower, and then accuracy of angular velocity detection improved. The relation between the linewidth Av of the Sagnac beat and cavity length P was proved to be Δ≈ -1.86.",
keywords = "Beat frequency, Laser gyroscope, Linewidth, S-FOG, Sagnac effect, Scale factor, SOA",
author = "Tomoki Ishida and Shuichi Tamura and Satoshi Simada and Keizo Inagaki and Shigeru Saito and Takahisa Harayama",
year = "2008",
doi = "10.1117/12.786142",
language = "English",
isbn = "9780819472045",
volume = "7004",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - Improvement of accuracy of angular velocity detection in semiconductor fiber-optic ring laser gyroscope

AU - Ishida, Tomoki

AU - Tamura, Shuichi

AU - Simada, Satoshi

AU - Inagaki, Keizo

AU - Saito, Shigeru

AU - Harayama, Takahisa

PY - 2008

Y1 - 2008

N2 - A semiconductor fiber-optic ring laser gyroscope (S-FOG) consists of a semiconductor optical amplifier (SOA) and optical fiber to form a ring cavity. The fiber ring cavity enables larger sizes and smaller scattering, while the SOA gain is shared by the clockwise (CW) and counterclockwise (CCW) propagating modes. When the S-FOG is rotated, a new beat signal called the Sagnac beat frequency is observed. We investigated the effect of the fiber ring cavity's length on detection characteristics. Detection sensitivity was not dependent on the number of laps of fiber ring cavity. However, when the cavity length became longer, the linewidth of Sagnac beat became narrower, and then accuracy of angular velocity detection improved. The relation between the linewidth Av of the Sagnac beat and cavity length P was proved to be Δ≈ -1.86.

AB - A semiconductor fiber-optic ring laser gyroscope (S-FOG) consists of a semiconductor optical amplifier (SOA) and optical fiber to form a ring cavity. The fiber ring cavity enables larger sizes and smaller scattering, while the SOA gain is shared by the clockwise (CW) and counterclockwise (CCW) propagating modes. When the S-FOG is rotated, a new beat signal called the Sagnac beat frequency is observed. We investigated the effect of the fiber ring cavity's length on detection characteristics. Detection sensitivity was not dependent on the number of laps of fiber ring cavity. However, when the cavity length became longer, the linewidth of Sagnac beat became narrower, and then accuracy of angular velocity detection improved. The relation between the linewidth Av of the Sagnac beat and cavity length P was proved to be Δ≈ -1.86.

KW - Beat frequency

KW - Laser gyroscope

KW - Linewidth

KW - S-FOG

KW - Sagnac effect

KW - Scale factor

KW - SOA

UR - http://www.scopus.com/inward/record.url?scp=45549090782&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=45549090782&partnerID=8YFLogxK

U2 - 10.1117/12.786142

DO - 10.1117/12.786142

M3 - Conference contribution

AN - SCOPUS:45549090782

SN - 9780819472045

VL - 7004

BT - Proceedings of SPIE - The International Society for Optical Engineering

ER -