A polarimetric current sensor using an orthogonally polarized dual-frequency fibre laser
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Lee, Myung Lae | - |
| dc.contributor.author | Park, Jin Sik | - |
| dc.contributor.author | Lee, Wang Joo | - |
| dc.contributor.author | Yun, Seok Hyun | - |
| dc.contributor.author | Lee, Yong Hee | - |
| dc.contributor.author | Kim, Byoung Yoon | - |
| dc.date.accessioned | 2010-11-30T02:20:32Z | - |
| dc.date.available | 2010-11-30T02:20:32Z | - |
| dc.date.issued | 1998 | - |
| dc.identifier.citation | Measurement Science and Technology, Vol.9, pp.952-959 | en |
| dc.identifier.issn | 0957-0233 | - |
| dc.identifier.uri | http://hdl.handle.net/10203/20514 | - |
| dc.description.abstract | We demonstrate a novel Er3+-doped fibre laser operating in orthogonally polarized dual-frequency modes and its application to electric current sensing with frequency read-out. A Faraday rotating mirror and spatial hole burning effects in a gain medium and in a saturable absorber are utilized to control the lasing mode and polarization. The polarization mode beat frequency changes linearly in response to the non-reciprocal circular birefringence induced by an external magnetic field. When the laser was applied to sensing an alternating electric current with a simple phase-locked loop signal processing scheme, the slope coefficient of 8.0 kHz A−1 p−p per turn and the noise equivalent current of 460 Arms Hz−1=2 per turn were obtained. The new current sensor is immune to perturbations in the lead fibres. | en |
| dc.description.sponsorship | This research was supported by the Agency for Defence Development of South Korea. | en |
| dc.language.iso | en_US | en |
| dc.publisher | Institute of Physics | en |
| dc.subject | current sensor | en |
| dc.subject | laser sensor | en |
| dc.subject | polarimetric | en |
| dc.subject | fibre laser | en |
| dc.subject | Faraday rotation | en |
| dc.title | A polarimetric current sensor using an orthogonally polarized dual-frequency fibre laser | en |
| dc.type | Article | en |
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