Prototype of interferometric absolute motion sensor

Collette, Christophe; Nassif, F.; Amar, Julien; Depouhon, Céline; Gorza, Simon-Pierre

doi:10.1016/j.sna.2015.01.019

Cited by 17 publications

(9 citation statements)

References 18 publications

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“…Some examples are: (1) For gravitational wave detection the signal of course varies in time. (2) Interferometers that are being developed for inertial sensors, with applications in seismology [22]. (3) The Gravity Recovery and Climate Experiment (GRACE) Follow-On mission is planned to include a laser interferometer for distance measurement [23].…”

Section: Introductionmentioning

confidence: 99%

Adaptive estimation of a time-varying phase with a power-law spectrum via continuous squeezed states

Dinani

Berry

2017

Phys. Rev. A

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When measuring a time-varying phase, the standard quantum limit and Heisenberg limit as usually defined, for a constant phase, do not apply. If the phase has Gaussian statistics and a powerlaw spectrum 1/|ω| p with p > 1, then the generalized standard quantum limit and Heisenberg limit have recently been found to have scalings of 1/N (p−1)/p and 1/N 2(p−1)/(p+1) , respectively, where N is the mean photon flux. We show that this Heisenberg scaling can be achieved via adaptive measurements on squeezed states. We predict the experimental parameters analytically, and test them with numerical simulations. Previous work had considered the special case of p = 2.

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Section: Introductionmentioning

confidence: 99%

Adaptive estimation of a time-varying phase with a power-law spectrum via continuous squeezed states

Dinani

Berry

2017

Phys. Rev. A

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“…The relative displacement between the inertial mass and the support is measured with a Michelson interferometer, adapted to enable the measurement of both quadratures of the signals as in [7] . It has a resolution of 3 pm/√Hz above 4 Hz [24] , which fits with the requirements for active stabilization of future linear particle colliders. However, besides this performance, a possible weakness of this sensor is that the calibration of the interferometer fluctuates over time, due to misalignment of the optical components.…”

Section: Introductionmentioning

confidence: 63%

“…More recently, optical accelerometers based on Michelson interferometer have been proposed for measuring vibrations in gravitational wave detectors [21][22][23] . Figure 1 shows another prototype of optical sensor recently developed at the Université Libre de Bruxelles (ULB) [24] . It consists of a horizontal pendulum, connected to a rigid frame through a flexural joint, made of CuBe alloy.…”

Section: Introductionmentioning

confidence: 99%

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Linear encoder based low frequency inertial sensor

Hellegouarch

Roza

Artoos

et al. 2016

International Journal of Optomechatronics

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In this article, we present a novel concept of inertial sensor, based on a linear encoder. Compared to other interferometric sensors, the encoder is much more easy to mount, and the calibration more stable. A prototype has been built and validated experimentally by comparison with a commercial seismometer. It has a resolution of about 10 pm/√Hz. In order to further improve the resolution, two concepts of mechanical amplifiers have been studied and compared. One of them is shown to be extremely promising, provided that the amplifier does not stiffen the sensor.

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“…Examples of specific use cases can be found in the nuclear energy field, for example miniature autonomous optical inertial accelerometers have been developed for nuclear tests [9], [10]. Other devices have been reported using optic fibers, such as the fiber interferometer [11], [12], [13], [14], [15], [16], [17], the Fabry-Perot interferometer [18], using fiber Bragg gratings [19], [20], grating sensors [21], multimode interference (MMI) sensors [22], or those based on the ROTE effect [23].…”

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confidence: 99%

An Inertial Uni-Axial Interferometer-Based Accelerometer for Harsh Environments

et al. 2022

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For high-impact devices, subsequent vibrations have as much influence on the deterioration of the mechanical structure as the impact itself. To mitigate the consequences of both impacts and resulting vibrations, it is crucial to accurately understand the peak acceleration and vibration frequencies that originate in the structure. In this article, a radiation tolerant opto-mechanical sensor based on an absolute measurement inertial accelerometer is presented. This method of measurement is chosen due to the viability of placing the readout electronics far from the highly radioactive environment that the sensor may be installed in. The designed accelerometer consists of a fixed aluminum frame with a built-in membrane that acts as a leaf spring. In the same membrane, a retro-reflector is attached which acts as a seismic mass. The retro-reflector reflects the light beam coming from the collimator lens placed on the frame. To prove its viability, the device has been tested under different conditions. First, the device is calibrated and validated using a high-frequency exciter. Second, a high-acceleration testbench is used to compare its output signal with a commercial accelerometer and verify its proper operation as well as its expected lifetime. The experimental results showed an average sensitivity of 9 × 10 −4 g/pm with reading measurements of up to 5000 g and a working bandwidth located between 50 and 800 Hz.

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Prototype of interferometric absolute motion sensor

Cited by 17 publications

References 18 publications

Adaptive estimation of a time-varying phase with a power-law spectrum via continuous squeezed states

Adaptive estimation of a time-varying phase with a power-law spectrum via continuous squeezed states

Linear encoder based low frequency inertial sensor

An Inertial Uni-Axial Interferometer-Based Accelerometer for Harsh Environments

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