Polarization independent optical isolator with integrally assemb

Details Polarization independent optical isolator with integrally assemb Polarization independent optical isolator with integrally assemb

1999-06-03

2000-04-11

Ullah, Akm E.

Optical waveguides

With disengagable mechanical connector

Structure surrounding optical fiber-to-fiber connection

G02B 638

Patent

active

06048103&

ABSTRACT:
Adapter-type optical isolator 1 has split sleeve 7 within housings A and B. Polarization-independent optical isolator is of such a structure that optical isolator device 3 which is an integral assembly of a Faraday rotator and a birefringent crystal element is provided within hollow cylindrical magnet 4. Beam changing elements 5a and 5b are in the form of optical coupling lenses or core-flared fibers. Adapter-type optical isolator 1 has the polarization-independent optical isolator and beam changing elements 5a and 5b fitted snugly within the bore of split sleeve 7 in the central area in such a way that the polarization-independent optical isolator is held between beam changing elements 5a and 5b. An optical connector using the adapter-type optical isolator 1 is simple in construction, permits simple assembly and adjustments, is small, allows for easy optical adjustments on individual optical parts, features high operational stability and can be incorporated into a wide variety of measuring instruments and communication equipment.

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Kazuo Shiraishi et al., "Fiber-Embedded in-Line Isolator," Journal of Lightwave Technology, vol. 9, No. 4, Apr., 1991.
Kok Wai Chang et al., "High-performance single-mode fiber polarization-independent isolator," Optics Letters, vol. 15, No. 8, Apr. 15, 1990.

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