Coupled Lasers Rotation Sensor (CLARS)

Scheuer, Jacob; Steinberg, Ben Z.

doi:10.1109/jlt.2008.2004923

Cited by 9 publications

(3 citation statements)

References 13 publications

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“…Moreover, to achieve an ultrasensitive gyro, some other approaches, including the use of rotation-induced superstructure and circular array of coupled lasers, were proposed and studied. 17,18 Here we share the same understanding in Ref. 16 that the sensitivity is enhanced, not so much by slow light in structure as by the structure dispersion property which makes slow light a resultant phenomenon.…”

supporting

confidence: 73%

Circle-coupled resonator waveguide with enhanced Sagnac phase-sensitivity for rotation sensing

Yan

Xiao

Guo

et al. 2009

Applied Physics Letters

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We propose a configuration of integrated waveguide structure consisting of resonators coupled to an arc-shape waveguide. We show theoretically that enhanced sensitivity is given by positive dispersion of the system, and the coupled resonators’ contribution manifests itself as an enhancement of phase shift imparted by Sagnac effect. A more clearly physical analysis indicated that the enhancement is with dependence in form but in physical essence no relation on slow light property predicted in the waveguides. This optimized system is preferable compared with a conventional gyroscope. Such proposed configuration can be used to realize highly compact optical gyroscope for rotation sensing.

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confidence: 73%

Circle-coupled resonator waveguide with enhanced Sagnac phase-sensitivity for rotation sensing

Yan

Xiao

Guo

et al. 2009

Applied Physics Letters

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“…Recent studies have shown that the employment of slow-light structures (SLS) in the rotation sensor can enhance the achievable sensitivity by orders of magnitudes [3][4][5][8][9] (for a given footprint). In particular, when the SLS comprises microcavities, it can be shown that the rotation directly modifies the dispersion relation of the SLS, thus generating substantially larger phase shifts compared to the classic Sagnac effect 5 .…”

Section: Why Slow Light?mentioning

confidence: 99%

Slow light rotation sensors and gyroscopes

Scheuer

2010

SPIE Proceedings

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Recent studies on optical rotation sensors employing slow-light media show great potential for the realization of compact, yet sensitive devices. In particular, the rapid progress in micro and nano fabrication methods render coupled cavity based slow-light structures as promising candidates for the realization of such devices. In slow-light structures, the impact of rotation is manifested in a completely different way than it does in conventional Gyros, thus giving rise to extremely different characteristics such as exponential sensitivity, phase-shift control and more. In this paper, I review the principles of slow-light rotation sensors with emphasis on the differences from conventional optical Gyros. The underlying physical mechanisms of the variously studied slow-light Gyros as well as the expected performances will be presented and compared.

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“…Most of the available rotation sensors are wired and/or composed of active elements such as microwave gyroscopes [1], fiber-optic sensors [2], chirped fiber grating rotation sensor [3], coupled lasers rotation sensor (CLARS) [4], optical fiber rotation sensors [5], and surface acoustic wave (SAW) rotation sensors [6], [7]. In [8], a MEMS high-speed angular sensor has been reported, which can be considered as a semi-active design and is capable of wirelessly measuring the angular movement.…”

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confidence: 99%

A Wireless Metamaterial-Inspired Passive Rotation Sensor With Submilliradian Resolution

et al. 2018

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A novel passive wireless rotation sensing system with high levels of sensitivity and resolution is proposed and demonstrated for measuring elastic-region bending in materials such as steel. This system is composed of a transceiver antenna and a double-plate sensor in the form of an inter-digital configuration, which does not incorporate any active component. The sensor exhibits a large rotation resolution of 20 µ-rad, an excellent sensitivity of 28 MHz/°in average, and a large linear dynamic range of approximately 40°. In operation, as a result of the relative rotation between the plates of the sensor, the operating resonance frequency of the system is shifted. This is read out and tracked in the S 11 response of the transceiver antenna from which the rotation angle is determined. The prototype is designed for microwave regime and it is suitable for measuring very small angles (10 −4 ∼ 10 −5 rad). Critical figuresof-merit of the sensor including sensitivity, dynamic range, and resolution are assessed via systematic measurements, and the validity of resolution experiment is verified by employing digital image correlation method for 2-D measurements.

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Coupled Lasers Rotation Sensor (CLARS)

Cited by 9 publications

References 13 publications

Circle-coupled resonator waveguide with enhanced Sagnac phase-sensitivity for rotation sensing

Circle-coupled resonator waveguide with enhanced Sagnac phase-sensitivity for rotation sensing

Slow light rotation sensors and gyroscopes

A Wireless Metamaterial-Inspired Passive Rotation Sensor With Submilliradian Resolution

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