Method and apparatus for forming fibre optic attenuators with sp

Details Method and apparatus for forming fibre optic attenuators with sp Method and apparatus for forming fibre optic attenuators with sp

1996-12-16

1998-04-21

Lee, John D.

Optical waveguides

Accessories

Attenuator

385123, G02B 602

Patent

active

057427259

ABSTRACT:
A fibre optic attenuator (201) with spectral response independent of the incident radiation wavelength is formed by a method comprising a controlled series of compressive stressing and subsequent relaxation, or of relaxation alone, of the core of an optical fibre (30) (which can be of standard type or special type), which is simultaneously softened by local heating produced by a heat source. The application of further heating, in the absence of mechanical stressing of the deformed optical fibre (30), facilitates the attainment of the required attenuation.

REFERENCES:
patent: 4728170 (1988-03-01), Robertson
patent: 4884859 (1989-12-01), Yamamoto et al.
patent: 5321790 (1994-06-01), Takahashi et al.

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