Optical loop-back attenuator
First Claim
Patent Images
1. An optical attenuator comprising:
- an optical fiber comprising an attenuating part which is bent to obtain a desired attenuation; and
a fixture fixing the optical fiber thereto.
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Accused Products
Abstract
An optical loop-back attenuator (2) includes a frame (22), a cover (21) attached to the frame, an optical fiber (24), an optical fiber fixture (23) retaining and fixing the optical fiber, and two SC plug connectors (25) receiving and retaining opposite ends of the optical fiber therein. The frame and the cover cooperate to fittingly receive the optical fiber, the optical fiber fixture and portions of the SC plug connectors therein. The optical fiber has a bent part (242) which is configured to be semicircular or to have another suitable shape that achieves a desired attenuation.
32 Citations
20 Claims
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1. An optical attenuator comprising:
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an optical fiber comprising an attenuating part which is bent to obtain a desired attenuation; and
a fixture fixing the optical fiber thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An optical attenuator comprising:
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an optical fiber comprising an attenuating part;
a fixture fixing the optical fiber thereto; and
two optical connectors respectively aligned with opposite ends of the optical fiber;
wherein the attenuating part of the optical fiber is bent such that a desired attenuation is obtained. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A method of making an attenuator comprising the steps of:
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providing a pair of juxtaposed fiber connectors with mating ports facing to a same direction;
connecting rear ends of said pair of connectors with an optical fiber;
securing the fiber in position around two opposite end portions thereof;
forming a curved portion between said two end portions;
adjusting radii or turns of said curved portion for obtaining a desired attenuation value; and
fixing said curved portion in position.
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Specification