Magnetic-field sensor using plastic optical fiber and polycrystalline CdMnTe

✍ Scribed by H. Guerrero; J.L. Escudero; E. Bernabeu

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 300 KB
• Volume: 39
• Category: Article
• ISSN: 0924-4247
• DOI: 10.1016/0924-4247(93)80177-i

✦ Synopsis

A plastic optical-fiber magnetometer has been developed based on the Faraday effect and using a polycrystalline CdMnTe plate, with a thickness of 0.55 mm, as Faraday rotator. This is a novel material manufactured by the authors to be used in Faraday-effect sensors. An LED with a peak wavelength at 660 nm is employed as the light source. It injects light into a 1 mm core plastic optical fiber. The magnetometer measurement range is between 0 and 104 G, and its resolution is 30 G. As experimental corroboration, the magnetic field has been measured across the axis of a tapered magnet.