Fiber optic "T" coupler modulator

Details Fiber optic "T" coupler modulator Fiber optic "T" coupler modulator

1997-04-24

1999-03-16

Ullah, Akm E.

Optical waveguides

With optical coupler

Particular coupling structure

G02B 626

Patent

active

058839933

ABSTRACT:
This invention relates to modulating light transmitted in an optic fiber. A passive light modulating device such as a polarizing material, a filter, or an attenuator is placed between two facing collimated ends of GRIN lenses attached to two optic fibers. The passive light modulating device modulates the light in the desired manner as it is transmitted between the two optic fibers. An active light modulating device such as a switch or an amplifier may also be used between the two GRIN lenses to actively modify the transmitted light.

REFERENCES:
patent: 4257671 (1981-03-01), Bardaudy et al.
patent: 4991924 (1991-02-01), Shankar et al.
patent: 5050954 (1991-09-01), Gardner et al.
patent: 5612824 (1997-03-01), Si et al.
patent: 5727109 (1998-03-01), Pan et al.
patent: 5742712 (1998-04-01), Pan et al.

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