Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8395782 | Detection and location of boundary intrusion, using composite variables derived from phase measurements | Zhizhong Zhuang, Yuri Zadorozhny, Francesco Anthony Annetta | 2013-03-12 |
| 7725026 | Phase responsive optical fiber sensor | Zhizhong Zhuang, Yuri Zadorozhny | 2010-05-25 |
| 7154668 | Wavelength dependent optical attenuator and variable attenuation profile controller | Zhizhong Zhuang | 2006-12-26 |
| 7142736 | Distributed fiber sensor with interference detection and polarization state management | Zhizhong Zhuang, Yuri Zadorozhny | 2006-11-28 |
| 7139476 | Distributed fiber sensor with detection and signal processing using polarization state management | Zhizhong Zhuang, Yuri Zadorozhny | 2006-11-21 |
| 7127179 | Polarization encoder device | Zhizhong Zhuang | 2006-10-24 |
| 7085052 | Over-parameterized polarization controller | Zhizhong Zhuang | 2006-08-01 |
| 6816261 | Polarization analysis unit, calibration method and optimization therefor | Zhizhong Zhuang, John A. Yeazell | 2004-11-09 |
| 6611342 | Narrow band polarization encoder | Zhizhong Zhuang | 2003-08-26 |
| 6606181 | Optical power limiting control | Zhizhong Zhuang | 2003-08-12 |
| 6327019 | Dual liquid-crystal wavelength-selective optical switch | W. John Tomlinson, Janet Jackel | 2001-12-04 |
| 6252644 | Wedge-shaped liquid-crystal cell having nonlinear gap | — | 2001-06-26 |
| 6075512 | Temperature compensation of a wedge-shaped liquid-crystal cell | Jung-Chih Chiao | 2000-06-13 |
| 5841500 | Wedge-shaped liquid crystal cell | — | 1998-11-24 |
| 5701168 | Inverse twisted and super-twisted nematic liquid crystal device | — | 1997-12-23 |
| RE35337 | Temperature compensation of liquid-crystal etalon filters | John R. Wullert, II | 1996-09-24 |
| 5414541 | Optical switch employing first and second ferroelectric cells with alignment layers having alignment directions offset by 45.degree. | Yaron Silberberg | 1995-05-09 |
| 5414540 | Frequency-selective optical switch employing a frequency dispersive element, polarization dispersive element and polarization modulating elements | Yaron Silberberg | 1995-05-09 |
| 5207862 | Technique for epitaxial growth of oriented thin films of polydiacetylenes | Gregory L. Baker, Sin-Doo Lee | 1993-05-04 |
| 5172257 | Twisted ferroelectric liquid crystal modulator for providing gray scale | — | 1992-12-15 |
| 5150236 | Tunable liquid crystal etalon filter | — | 1992-09-22 |
| 5132824 | Liquid-crystal modulator array | Andrew M. Weiner | 1992-07-21 |
| 5113275 | Temperature compensation of liquid-crystal etalon filters | John R. Wullert, II | 1992-05-12 |
| 5111321 | Dual-polarization liquid-crystal etalon filter | — | 1992-05-05 |
| 5069813 | Electrically controlled polarization-independent liquid crystal fresnel lens | — | 1991-12-03 |