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US 5,398,296 AGranted
Method of fabricating an optical attenuator
AssigneeIndustrial Technology Research Institute
InventorsSong-Fure Lin, Chung-Ying Kung, Wan-Kwo Lin
Life of this patent
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Abstract
A method of producing an optical attenuator with any desired attenuation, by parallelly overlapping and welding two fibers at their ends. A light source is connected to one of the fibers and a power meter is connected to the other. The fibers is heated until readout of the power meter reaches a predetermined value, and a mode filter is applied to the welded portion to prevent unstable mode condition.
Claims8
An optical attenuator, comprising:
- a first optical fiber with a first free end;
- a second optical fiber with a second free end, the first free end of the first optical fiber and the second free end of the second optical fiber being parallelly overlapped and welded to form a welded portion;
- a mode filter being made around the welded portion.
A method of producing an i optical attenuator, comprising the following steps of:
- (a) providing a first optical fiber with a first free end;
- (b) providing a second optical fiber with a second free end;
- (c) parallelly overlapping and welding the first free end of the first optical fiber and the second free end of the second optical fiber;
- and
- (d) making a mode filter around the welded portions of the fibers.
2 more elements
Dependencies are inferred from the claim text.