Optical fibre coupling device

Details Optical fibre coupling device Optical fibre coupling device

1991-03-25

1992-07-21

Ullah, Akm E.

Optical waveguides

With optical coupler

385 33, 385 93, G02B 642

Patent

active

051320797

ABSTRACT:
An optical fibre coupling device comprises a mount 11 supporting an optical fibre waveguide having at a fibre end a surface of the fibre core 2 material which is surrounded by a body 3 of cladding material. At the core end a circular symmetric phase plate 7 is centered about the core 2 such that the light from a laser 1 entering or leaving the waveguide experiences a predetermined phase change. The phase change can act to reduce an optical coupling loss which occurs when the device is in use.

REFERENCES:
patent: 4834492 (1989-05-01), Ishii et al.
patent: 4919506 (1990-04-01), Covey
patent: 4955014 (1990-09-01), Kuppers et al.
patent: 4966433 (1990-10-01), Blonder
patent: 5018820 (1991-05-01), Boudpeau et al.
patent: 5044717 (1991-09-01), LeVatter
patent: 5046809 (1991-09-01), Stein

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