Daryuan Y Song, Age 71620 W 170Th St UNIT 2A, New York, NY 10032

2013015, Jun 20, 2013

Oct 25, 2012

13/660909

Daryuan Song - Irvine CA, US
Yung-Chieh Hsieh - San Jose CA, US

OPTOPLEX CORPORATION - Fremont CA

G02B 1/10
B32B 38/08
B32B 38/10

359584, 156256

A plane-parallel optical window is the spacer of single-cavity filters in the stack used for DWDM applications. Highly reflective quarter-wave stacks are deposited on each side of the optical window and the single-cavity structure so obtained is diced to produce a plurality of filters. Because the single-cavity structure has the same thickness over the entire window area and the quarter-wave-stack deposition process is carried out throughout under the same conditions, each single-cavity filter fabricated from the optical window has the same transmission wavelength and is therefore readily stackable for DWDM applications. Alternatively, an optical window with a thickness equal to one half that required for the spacer of a single-cavity filter is coated on a single side. The window is then divided in multiple identical components that can be combined in pairs by placing them in optical contact so as to form individual single-cavity filters with the same transmission wavelength.

2013027, Oct 24, 2013

Jun 23, 2013

13/924598

DARYUAN SONG - IRVINE CA, US
YUNG-CHIEH HSIEH - SAN JOSE' CA, US

G02B 1/10

359584, 156264

A plane-parallel optical window is the spacer of single-cavity filters in the stack used for DWDM applications. Highly reflective quarter-wave stacks are deposited on each side of the optical window and the single-cavity structure so obtained is diced to produce a plurality of filters. Each single-cavity filter so fabricated from the optical window has the same transmission wavelength and is therefore readily stackable for DWDM applications. Alternatively, an optical window with a thickness equal to one half that required for the spacer of a single-cavity filter is coated on a single side. The window is then divided in multiple identical components that can be combined in pairs by placing them in optical contact so as to form individual single-cavity filters with the same transmission-peak wavelength. The transmission peak of the filter can be fine tuned by controlling the temperature of the solid spacer material.

2006026, Nov 30, 2006

Feb 22, 2006

11/360959

Yung-Chieh Hsieh - Livermore CA, US
Chiayu Ai - Newark CA, US
Chih-Hung Chien - Fremont CA, US
Daryuan Song - Irvine CA, US

G01B 9/02

356450000

An interferometer includes a means for splitting, at a splitting location, an input light beam into a first beam and a second beam; and means for recombining, at a recombination location, the first beam and the second beam. The interferometer is designed such that the first beam will travel a first optical path length (OPL) from the splitting location to the recombination location, and the second beam will travel a second OPL from the splitting location to the recombination location and such that when the input light beam has been modulated at a data rate comprising a time interval, then the difference in optical path lengths between the first OPL and the second OPL is about equal to the time interval multiplied by the speed of light