Sidney Huang

US Patent:

62630032, Jul 17, 2001

Filed:

Nov 13, 1998

Appl. No.:

9/191797

Inventors:

Sidney Xi-Yi Huang - Westwood NJ
Naveen Sarma - New York City NY

Assignee:

AlliedSignal Inc. - Morristown NJ

International Classification:

H01S 330
H01S 300
G02B 602

US Classification:

372 6

Abstract:

A very high power fiber light source can be realized by using a high concentration of doping and by pumping the cladding of the doped fiber. The light that enters the cladding will then enter the core and amplified spontaneous emission will result. With this arrangement, higher power, a broader emission spectrum, and low radiation sensitivity can be achieved. These devices can also be configured as amplifiers.

US Patent:

58984968, Apr 27, 1999

Filed:

Feb 14, 1997

Appl. No.:

8/800944

Inventors:

Sidney Xi-Yi Huang - Westwood NJ
Naveen Sarma - Rutherford NJ
Kevin Mark Killian - Hillsdale NJ
James Edward Goodwin - Ramsey NJ

International Classification:

G01C 912

US Classification:

356350

Abstract:

The RIN (random intensity noise) component of the random walk error of a fiber optic gyroscope can be reduced by utilizing an unpolarized light signal during processing. By depolarizing the light wave modulated by the fiber optic sensing coil or combining it with the unmodulated light wave of orthogonal polarization, a 3 db reduction in RIN can be achieved.