Journal ArticleDOI
Limitation of rotation sensing by scattering.
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TLDR
It is shown that one source of limitation, namely, the superposition of a nonreciprocal pair of waves generated by backward scattering from the incident waves, can result in significant error but can be mitigated by appropriate system design and signal modulation.Abstract:
There appear to be limitations in the operation of optical-fiber Sagnac gyro rotation sensors that have imposed a minimum measurable rotation rate that is much higher than that caused by quantum noise. We show that one source of limitation, namely, the superposition of a nonreciprocal pair of waves generated by backward scattering from the incident waves, can result in significant error but can be mitigated by appropriate system design and signal modulation.read more
Citations
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Journal ArticleDOI
Optical fiber sensor technology
Thomas G. Giallorenzi,Joseph A. Bucaro,Anthony Dandridge,G. H. Sigel,J. H. Cole,Scott C. Rashleigh,R. Priest +6 more
TL;DR: The current state of the art of optical fiber sensors is reviewed, the principles of operation are detailed and the various types of fiber sensors are outlined.
Journal ArticleDOI
An overview of fiber-optic gyroscopes
TL;DR: In this paper, the principles of operation of fiber-optic gyroscopes are reviewed along with methods to reduce their effect on the rotation-rate signal, and a direction of future research and possible applications are indicated.
Journal ArticleDOI
Low-drift fibre gyro using a superluminescent diode
TL;DR: By using a superluminescent diode as the light source and a depolariser inside the fiber coil, a constant scale factor was achieved without using polarisation control elements.
Journal ArticleDOI
Characteristics of erbium-doped superfluorescent fiber sources for interferometric sensor applications
TL;DR: In this article, the characteristics of 1.55 /spl mu/m Er-doped superfluorescent fiber sources (SFSs) intended for fiber-optic gyroscope (FOG) applications are explored theoretically and experimentally.
References
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Journal ArticleDOI
Thermally induced nonreciprocity in the fiber-optic interferometer.
TL;DR: A fiber-optic coil for use as the sensor loop of a fiber optic gyroscope includes a first optical fiber segment wound as radially successive coiled layers around a coil bobbin in a first region thereof.
Journal ArticleDOI
Fiber-optic rotation sensing with low drift.
TL;DR: Fiber-optic rotation sensing with an extrapolated drift of 1 deg/h1/2 is accomplished by operating the Sagnac interferometer from a truly single-mode common input–output port in connection with a phase-modulation scheme and active polarization stabilization.
Journal ArticleDOI
Fiber-ring interferometer: polarization analysis.
Reinhard Dr Ulrich,Mark Johnson +1 more
TL;DR: In a rotation-sensing fiber-optical Sagnac interferometer, temperature fluctuations and mechanical vibrations affect the birefringence of the fiber and may cause phase shifts like those resulting from rotation.