Presentation 1998/2/12
High Frequency Response of Optical Magnetic Field Sensors Using Rare-Earth Iron Garnet Films
Nobuki Itoh, Hisashi Minemoto, Daisuke Ishiko, Satoshi Ishizuka,
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Abstract(in English) We have measured high frequency response of optical magnetic field sensors using Bi-substituted rare-earth iron garnet films up to 1 GHz.The sesor has a 150 MHz frequency bandwidth.A resonance peak was observed at around 100 MHz in the spectrum.The frequency response decreases gradually toward 1 GHz.The cause of the resonance phenomenon can be understood from domain wall resonance.The sensor with higher saturation magnetic field has a wider frequency bandwidth.As a result, we have found that the opticl current transformers using the sensors have enough performance to detect the surge current such as μs order response.
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Keyword(in English) optical magnetic field sensor / rare-earth iron garnet crystal / optical fiber / high frequency response
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Committee OPE
Conference Date 1998/2/12(1days)
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Registration To Optoelectronics (OPE)
Language JPN
Title (in Japanese) (See Japanese page)
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Title (in English) High Frequency Response of Optical Magnetic Field Sensors Using Rare-Earth Iron Garnet Films
Sub Title (in English)
Keyword(1) optical magnetic field sensor
Keyword(2) rare-earth iron garnet crystal
Keyword(3) optical fiber
Keyword(4) high frequency response
1st Author's Name Nobuki Itoh
1st Author's Affiliation Matsushita Electric Industrial Co., Ltd., Multimedia Systems Research Laboratory()
2nd Author's Name Hisashi Minemoto
2nd Author's Affiliation Matsushita Electric Industrial Co., Ltd., Multimedia Systems Research Laboratory
3rd Author's Name Daisuke Ishiko
3rd Author's Affiliation Matsushita Electric Industrial Co., Ltd., Multimedia Systems Research Laboratory
4th Author's Name Satoshi Ishizuka
4th Author's Affiliation Matsushita Electric Industrial Co., Ltd., Multimedia Systems Research Laboratory
Date 1998/2/12
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Volume (vol) vol.97
Number (no) 539
Page pp.pp.-
#Pages 6
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