Francis L Needham

US Patent:

54229740, Jun 6, 1995

Filed:

Sep 23, 1994

Appl. No.:

8/312743

Inventors:

Gair D. Brown - Dahlgren VA
Alan C. Schwarting - Warsaw VA
Robert G. Aldous - King George VA
Daniel D. Thomas - King George VA
Francis L. Needham - Fredericksburg VA
Sara M. Leite - Dahlgren VA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G02B 636
G02B 638

US Classification:

385135

Abstract:

Rotary mechanical splices between axially aligned optic fibers are seated der axial compression within bays recessed into the body of a holding tray on which a retention lid is fastened in a position to which it is guided by fins on its underside received in grooves formed in the tray body. In such position of the lid on the tray, the lid underside surface covers access formations and the bays between the fins having portions covering fiber slots in the tray through which the optic fibers extend in alignment with their splices.

US Patent:

52803350, Jan 18, 1994

Filed:

May 26, 1992

Appl. No.:

7/888074

Inventors:

Francis L. Needham - Fredericksburg VA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H01L 2714
H01L 3100
H03F 1700
H03K 1914

US Classification:

356 731

Abstract:

A system for testing a fiber-optic component with infrared radiation is provided. The testing system has a source of infrared radiation, an optic coupler, a detecting circuit, and an analog tape recorder. The optic coupler directs the infrared radiation onto the fiber-optic component. The detection circuit is electrically connected to the tape recorder. The detection circuit has an amplifier, a potentiometer connected in parallel to the amplifier, and a photoelectric transducer connected in series to the amplifier. These components are mounted on a non-conductive board. A power source supplies voltage and is connected to the amplifier. The circuit operates by having the photoelectric transducer sense the infrared radiation emitted from the tested fiber-optic component and convert the radiation into an electrical signal. The amplifier then amplifies the electrical signal to the voltage necessary for driving the tape recorder.