Optical isolator element, a method for producing such an element, and an optical isolator using such an element
AssigneeKYOCERA Corporation
InventorsMichifumi Shoda, Yasushi Sato, Yukiko Furukata, Yoshiyuki Shigeoka
Life of this patent
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Abstract
An optical isolator is constructed such that an optical isolator element in which at least one flat Faraday rotator and at least two flat polarizers are bonded to each other into an integral unit by van der Waals forces or hydrogen-bonding forces acting between bonding surfaces of the Faraday rotator and the polarizers is accommodated in a tubular magnetic element.
Claims21
An optical isolator element, comprising:
- at least one flat Faraday rotator, and
- at least two flat polarizers,
- wherein the Faraday rotator and the polarizers are bonded to each other by van der Waals forces acting between bonding surfaces thereof.
An optical isolator element, comprising:
- at least one flat Faraday rotator, and
- at least two flat polarizers,
- wherein the Faraday rotator and the polarizers are bonded to each other by hydrogen-bonding forces acting between bonding surfaces thereof.
An optical isolator, comprising:
- an optical isolator element including at least one flat Faraday rotator and at least two flat polarizers bonded to each other by van der Waals forces acting between bonding surface thereof, and
- a magnetic element arranged around the optical isolator element.
An optical isolator, comprising:
- an optical isolator element including at least one flat Faraday rotator and at least two flat polarizers bonded to each other by hydrogen-bonding forces acting between bonding surface thereof, and
- a magnetic element arranged around the optical isolator element.
A method for producing an optical isolator element including at least one flat Faraday rotator and at least two flat polarizers bonded to each other, comprising the steps of:
- activating bonding surfaces of the Faraday rotator and the polarizers, and
- bringing the Faraday rotator and the polarizers having the bonding surfaces activating into contact with each other in vacuum, thereby bonding the Faraday rotator and the polarizer by van der Waals forces created on the bonding surfaces of the Faraday rotator and the polarizers.
A method for producing an optical isolator element including at least one flat Faraday rotator and at least two flat polarizers bonded to each other, comprising the steps of:
- cleaning bonding surfaces of the Faraday rotator and the polarizers,
- activating the bonding surfaces of at least either one of the Faraday rotator and the polarizers by the adsorption of hydroxyl groups, and
- bringing the Faraday rotator and the polarizers into contact with each other in vacuum, thereby bonding the Faraday rotator and the polarizers by hydrogen-bonding forces acting between the hydroxyl groups on the bonding surfaces at one side and oxygen atoms in the other bonding surfaces.
Dependencies are inferred from the claim text.