Optical masking apparatus

Details Optical masking apparatus Optical masking apparatus

1994-10-05

1996-09-17

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

359234, G01N 2188, G02B 2604

Patent

active

055574017

ABSTRACT:
An optical masking apparatus of an OTDR capable of lowering insertion loss and of easily aligning optical axes and of being structured at low cost. The apparatus comprises an optical pulse generating means, an optical branching coupler for permitting an optical pulse generated by the optical pulse generating means to be incident to an optical fiber to be measured, and an optical chopper means to which a reflected light from the optical fiber is incident by way of the optical branching coupler wherein the optical chopper means operates in synchronization with the optical pulse to remove a desired range of the reflected light. A light signal supplied to an optical/electric transducer from the optical chopper means is converted into an electric signal, which is displayed on an indicator by way of a signal processing circuit.

REFERENCES:
patent: 3525873 (1970-08-01), Nomarski et al.
patent: 4524271 (1985-06-01), Parker
patent: 4769534 (1988-09-01), Brand
patent: 4838689 (1989-06-01), Neumann
patent: 4989971 (1991-02-01), McDonald

Affiliated with

Also associated with

Rating

Optical masking apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical masking apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical masking apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-417424