Integrated fiber optical attenuator with monotonic attenuation

Details Integrated fiber optical attenuator with monotonic attenuation Integrated fiber optical attenuator with monotonic attenuation

2005-12-05

2008-10-21

Cherry, Euncha P (Department: 2872)

Optical: systems and elements

Light control by opaque element or medium movable in or...

Reexamination Certificate

active

07440156

ABSTRACT:
Designs of optical devices for attenuating a light signal are disclosed. According to embodiment, an attenuator includes a screw and a light blocker, wherein the light blocker has only translational movements when the screw is screwed in or out. To facilitate the light signal in and out, a first collimator to receive a light beam, and a second collimator to output the light beam, wherein the light beam is attenuated by the light blocker when the light is transmitted from the first collimator to the second collimator.

REFERENCES:
patent: 6144794 (2000-11-01), Mao et al.
patent: 6553175 (2003-04-01), Jaspan

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