Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Ayoub Chakari"'
Publikováno v:
International Conference on Space Optics — ICSO 1997.
Publikováno v:
Optics & Laser Technology. 39:1454-1460
Curvature of a multimode integrated optical waveguide reduces the numerical aperture and induces radiation losses. In this paper, we study this phenomenon and we present a geometrical approach to calculate the local numerical aperture and the intensi
Publikováno v:
Optics & Laser Technology. 36:239-243
We propose a new optical method for the determination of the rigidity modulus G of solid materials. The rigidity modulus is determined by measuring the twisted angle θ as a response of the material sample, depending on the applied force. The measuri
Autor:
Ayoub Chakari, Nicolas Javahiraly
Publikováno v:
SPIE Proceedings.
We propose the study and the design of an ultra sensitive polarimetric torque sensor. The principle is based on the measurement of the torsion angle induced on the shaft when a torque T is applied on it. This optical torque sensor has been tested
Autor:
Ayoub Chakari, Nicolas Javahiraly
Publikováno v:
SPIE Proceedings.
We propose a polarimetric fiber optic vibration sensor. The principle is based on the evolution of polarization when the constraint (vibration) is applied on a sensitive zone of the sensor. We study the effects of a vibration application on our syste
Publikováno v:
Photonics in the Transportation Industry: Auto to Aerospace II.
The reliable, accurate and low cost measurement of angular position is an important challenge for numerous industries such as aerospace or automotive industries. We propose a new optical fiber angular position sensor connected to an automotive power
Publikováno v:
Eighth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications.
Accurate vibration measurement of mechanical structures is a relevant problem in aerospace or automotive industry and sismic detection. Used methods concern for instance non guided optics devices, contact resistive systems, contact mechanical systems
Autor:
Ayoub Chakari, Nicolas Javahiraly
Publikováno v:
Eighth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications.
We present a solid material characterisation method using a very acccurate polarimetric fiber optic sensor. This very accurate and sensitive transductor permits us to measure the rigidity modulus G of several solid materials presenting several differ
Publikováno v:
Optical Sensors 2008.
In this paper, we proposes a general model for describing and analysing the operation of the multimode fiber optic gyroscope (MFOG). In this model, each fiber gyroscope components is modeled by an electrical field transfer matrix. The output intensit
Publikováno v:
SPIE Proceedings.
This paper reports the optimization possibilities of some non-linear sources of limitations in the resolution and accuracy of an Absolute Distance Interferometry setup using an External Cavity Laser Diode for wavelength scanning and a fibered Mach-Ze