Optical isolator production method, optical isolator, and polarizing glass
AssigneeHoya Corporation
InventorsYoshiatsu YOKOO, Yoshitaka YONEDA
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Abstract
Provided is a method of producing an optical isolator that is thinner than conventional optical isolators but is extremely less affected by film stress in an anti-reflection film. An optical isolator production method in an embodiment is a method of producing an optical isolator including a Faraday rotator and a polarizing glass attached to the Faraday rotator, and includes the steps of bonding the polarizing glass to the Faraday rotator and forming an anti-reflection film on a surface of the bonded polarizing glass.
Claims13
An optical isolator production method of producing an optical isolator including a Faraday rotator and a polarizing glass attached to the Faraday rotator, comprising the steps of:
- bonding the polarizing glass to the Faraday rotator;
- and
- forming an anti-reflection film on a surface of the bonded polarizing glass.
An optical isolator comprising a Faraday rotator and a polarizing glass bonded to the Faraday rotator, wherein
- a thickness of the polarizing glass is 0.10 mm or less, and
- the optical isolator comprises an anti-reflection film having a thickness of 650 nm or more and formed on only an outer surface of the polarizing glass.
A polarizing glass for an optical isolator, having one surface to be bonded to a Faraday rotator, wherein
- a thickness is 0.028 to 0.20 mm, and
- the polarizing glass comprises an anti-reflection film having a thickness of 400 to 2000 nm and formed on the other surface after the polarizing glass is bonded to the Faraday rotator.
Dependencies are inferred from the claim text.