Issued Patents All Time
Showing 26–50 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6452702 | N×M digitally programmable optical routing switch | Jian Liu | 2002-09-17 |
| 6429962 | Dynamic gain equalizer for optical amplifiers | Ming Xu, Tizhi Huang, Chongchang Mao, Jian Liu, Charles Wong | 2002-08-06 |
| 6426816 | Wide transmission optical comb filter with wide pass band and wide stop band | Charles Wong, Jian Liu, Ye Li | 2002-07-30 |
| 6396609 | Dispersion compensation for optical systems | Chi-Hao Cheng, Jian Liu, Charles Wong | 2002-05-28 |
| 6353467 | Acute twist nematic (ATN) liquid crystal device for optical communication applications | Charles Wong, Yen-Chen Chen, Jian Liu | 2002-03-05 |
| 6337934 | NxN switch array with polarization displacer | Jian Liu | 2002-01-08 |
| 6288807 | Optical wavelength router | Jian Liu | 2001-09-11 |
| 6285478 | Programmable optical add/drop device | Jian Liu, Charles Wong | 2001-09-04 |
| 6275312 | Optical routing switch | Michael J. Derks, Jian Liu | 2001-08-14 |
| 6243200 | Optical wavelength router based on polarization interferometer | Gan Zhou | 2001-06-05 |
| 6208444 | Apparatus for wavelength demultiplexing using a multi-cavity etalon | Seng-Ieong Wong, Jian Liu | 2001-03-27 |
| 6208442 | Programmable optical multiplexer | Jian Liu, Charles Wong | 2001-03-27 |
| 6201593 | Optical communication system having a liquid crystal routing switch | Charles Wong, Yen-Chen Chen, Jian Liu | 2001-03-13 |
| RE37044 | Tunable add/drop optical filter | — | 2001-02-06 |
| 6175432 | Multi-wavelength cross-connect optical network | Jian Liu | 2001-01-16 |
| 6166838 | Optical add/drop wavelength switch | Jian Liu | 2000-12-26 |
| 6163393 | Method and apparatus for wavelength multipexing/demultiplexing | Jian Liu | 2000-12-19 |
| 6141076 | Spatial light modulators constructed from ferroelectric liquid crystal devices with twisted structure | Jian Liu, Seng-Ieong Wong | 2000-10-31 |
| 6137606 | Optical wavelength router | Jian Liu | 2000-10-24 |
| 6134358 | N x N switch array with reduced components | Jian Liu | 2000-10-17 |
| 6115155 | System for dealing with faults in an optical link | Jian Liu | 2000-09-05 |
| 6097518 | N x M optical wavelength routing switch | Jian Liu | 2000-08-01 |
| 6094246 | Acute twist nematic liquid crystal electro-optic modulator for use in an infrared optical communication system having extinction ratio of -25db | Charles Wong, Yen-Chen Chen, Jian Liu | 2000-07-25 |
| 6049404 | N+M digitally programmable optical routing switch | Jian Liu | 2000-04-11 |
| 6005697 | Multi-wavelength cross-connect optical network | Jian Liu | 1999-12-21 |