Fused fiber optic attenuator having axially overlapping fiber en

Details Fused fiber optic attenuator having axially overlapping fiber en Fused fiber optic attenuator having axially overlapping fiber en

1992-03-18

1994-02-08

Lee, John D.

Optical waveguides

Accessories

Attenuator

385 96, 385 97, G02B 626

Patent

active

052855163

ABSTRACT:
A method for fabricating single-mode and multi-mode attenuators characterized by a high level of wavelength insensitivity. A light source is connected to one end of a fiber and the other end is connected to an optical power meter. The optical power meter is set to a 0 dB reference. The fiber is then cut and the cut ends cleaved to define first and second segments. The ends of the segments are offset and overlapped by an axial distance that is large relative to the fiber diameter. The overlapping ends are heated so that they assume a fused state, and the relative axial positioning of the fiber ends while they are in the plastic state is adjusted to achieve the desired degree of attenuation, as indicated on the meter.

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