Jane S Chen

US Patent:

7154659, Dec 26, 2006

Filed:

Apr 17, 2003

Appl. No.:

10/418712

Inventors:

Jane Chen - Diamond Bar CA, US
Yongqiang Shi - Diamond Bar CA, US

Assignee:

General Photonics Corporation - Chino CA

International Classification:

G02F 1/09
G02B 5/30

US Classification:

359281, 359495, 359497, 385 11, 385 32

Abstract:

Techniques and devices for depolarizing light and producing a variable differential group delays in optical signals. In one implementation, an input optical beam is split into first and second beams with orthogonal polarizations. One or two optical reflectors are then used to cause the first and second optical beams to undergo different optical path lengths before they are recombined into a single output beam. An adjustment mechanism may used implemented to adjust the difference in the optical path lengths of the first and second beams to produce a variable DGD. When the depolarization of light is desired, the difference in the optical path lengths of the first and second beams is set to be greater than the coherence length of the input optical beam.

US Patent:

7535639, May 19, 2009

Filed:

Dec 26, 2006

Appl. No.:

11/616264

Inventors:

Jane Chen - Diamond Bar CA, US
Yongqiang Shi - Diamond Bar CA, US

Assignee:

General Photonics Corporation - Chino CA

International Classification:

G02B 5/30

US Classification:

359487, 359495, 359497, 385 11, 385 36

Abstract:

Techniques and devices for depolarizing light and producing a variable differential group delays in optical signals. In one implementation, an input optical beam is split into first and second beams with orthogonal polarizations. One or two optical reflectors are then used to cause the first and second optical beams to undergo different optical path lengths before they are recombined into a single output beam. An adjustment mechanism may used implemented to adjust the difference in the optical path lengths of the first and second beams to produce a variable DGD. When the depolarization of light is desired, the difference in the optical path lengths of the first and second beams is set to be greater than the coherence length of the input optical beam.

US Patent:

8164831, Apr 24, 2012

Filed:

May 19, 2009

Appl. No.:

12/468801

Inventors:

Jane Chen - Diamond Bar CA, US
Yongqiang Shi - Diamond Bar CA, US

Assignee:

General Photonics Corporation - Chino CA

International Classification:

G02B 5/30
G02B 6/26
G02B 27/28

US Classification:

35948402, 35948501, 35948506, 35948907, 35948908, 35949401, 385 11, 385 32, 385 33, 385 36

Abstract:

Techniques and devices for depolarizing light and producing a variable differential group delays in optical signals. In one implementation, an input optical beam is split into first and second beams with orthogonal polarizations. One or two optical reflectors are then used to cause the first and second optical beams to undergo different optical path lengths before they are recombined into a single output beam. An adjustment mechanism may used implemented to adjust the difference in the optical path lengths of the first and second beams to produce a variable DGD. When the depolarization of light is desired, the difference in the optical path lengths of the first and second beams is set to be greater than the coherence length of the input optical beam.