Optical fiber terminal with optical isolator and semiconductor laser module using the same

An optical fiber terminal provided with an optical isolator having a Faraday rotator, including an optical fiber retained in a ferrule, an optical isolator element, and a permanent magnet for applying a magnetic field to the Faraday rotator is improved to provide a minimum possible outer diameter. T...

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Bibliographic Details
Main Authors HATA; KENJIRO, SEKIJIMA; MAKOTO, IWATSUKA; SHINJI
Format Patent
LanguageEnglish
Published 24.11.1998
Edition6
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:An optical fiber terminal provided with an optical isolator having a Faraday rotator, including an optical fiber retained in a ferrule, an optical isolator element, and a permanent magnet for applying a magnetic field to the Faraday rotator is improved to provide a minimum possible outer diameter. The fiber terminal comprises an attaching member for fixedly attaching the optical isolator and the permanent magnet to the ferrule together; an air layer between an end of said optical fiber and said optical isolator element; a first outer diameter of said ferrule on the side of the optical isolator constituting a maximum diameter of the optical fiber terminal, a second outer diameter of said ferrule on the side of the optical fiber being smaller than the first maximum diameter; and the periphery of the permanent magnet being exposed to the air.
Bibliography:Application Number: US19970868205