Faraday rotator suitable for high-power opto-isolator
2013
The invention discloses a Faraday rotator suitable for a high-power opto-isolator. The Faraday rotator comprises a thermal compensation crystal, a half-wave plate, an iron ring, a first magnetic rotation crystal, a second magnetic rotation crystal, a first magnet and a second magnet. The first magnetic rotation crystal, the thermal compensation crystal, the half-wave plate and the second magnetic rotation crystal are laid out in the forward sequence of a Z axis, the iron ring is connected to the outside of the thermal compensation crystal and the outside of the half-wave plate in a sleeved mode, the first magnet is connected to the outside of the first magnetic rotation crystal in a sleeved mode, and the second magnet is connected to the outside of the second magnetic rotation crystal in a sleeved mode. When used for the opto-isolator, the Faraday rotator enables the opto-isolator to meet the requirement for high power of hundreds of watts and improves isolation degrees by at least 3dB.
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