High resolution optical fault locator

Details High resolution optical fault locator High resolution optical fault locator

1989-10-23

1991-04-16

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

With means to inspect passive solid objects

250341, 556 731, 350 731, 350 9615, G01N 2145

Patent

active

050085450

ABSTRACT:
A high resolution optical fault locator for single mode applications uses a high power, short wavelength laser for generating narrow optical pulses that are launched into a single mode fiber under test. The laser output is coupled to a multimode coupler whose output is coupled to a multimode output fiber. The multimode output fiber is fusion spliced with a single mode fiber, which is coupled to a front panel connector for connecting the fiber under test to the fault locator. An optical detector that is compatible with the output laser is coupled to the multimode coupler to receive the reflected light from the fiber under test. The high resolution fault locator is useful in examining single mode local area networks where many closely spaced fiber connections exist.

REFERENCES:
patent: H668 (1989-09-01), Rand
patent: 4320968 (1982-03-01), Wakabayashi et al.
patent: 4685799 (1987-08-01), Brininstool
patent: 4772084 (1988-09-01), Bogert
patent: 4772085 (1988-09-01), Moore et al.
patent: 4823166 (1989-04-01), Hartog et al.
patent: 4834481 (1989-05-01), Lawson et al.
patent: 4838690 (1989-06-01), Buckland et al.

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