Issued Patents All Time
Showing 26–50 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9847831 | Dual wavelenth optical time domain reflectometer systems and methods embedded in a WDM system | David W. Boertjes | 2017-12-19 |
| 9793986 | Raman amplifier system and method with integrated optical time domain reflectometer | Jun Bao, Balakrishnan Sridhar | 2017-10-17 |
| 9680569 | Method and system for optical connection validation in a reconfigurable optical add-drop multiplexer (ROADM) node | Scott Kohlert, Jun Bao, Zhonghua Zhu | 2017-06-13 |
| 9419708 | Live monitoring of raman and fiber degradation in DWDM networks using in-service OTDR | Mohammad Mehdi Mansouri Rad, David C. Bownass, Loren Berg, David W. Boertjes | 2016-08-16 |
| 9148710 | Raman amplifier system and method with integrated optical time domain reflectometer | Jun Bao, Balakrishnan Sridhar | 2015-09-29 |
| 9140624 | Systems and methods reducing coherence effect in narrow line-width light sources | Jun Bao, Michael H. Shahine, Hua Jiao | 2015-09-22 |
| 8817245 | High-powered optical module safety systems and methods | Jun Bao | 2014-08-26 |
| 8774632 | Reconfigurable optical add drop multiplexer node automated topology discovery systems and methods | — | 2014-07-08 |
| 8625994 | Directionless reconfigurable optical add-drop multiplexer systems and methods | Michael Y. Frankel, Loudon T. Blair, Sashisekaran Thiagarajan | 2014-01-07 |
| 8467688 | Telecommunications transport methods and systems for extended reach low differential latency | Steven A. Surek, Martin C. Nuss | 2013-06-18 |
| 8457497 | Optimized directionless optical add/drop module systems and methods | Shan Zhong, Jun Bao | 2013-06-04 |
| 7962049 | Systems and methods for communication system control utilizing corrected forward error correction error location identifiers | John P. Mateosky, Michael Y. Frankel | 2011-06-14 |
| 7809272 | Systems and methods for providing a three-port reconfigurable optical add-drop multiplexer with an improved edge profile and add/drop flexibility | Shan Zhong | 2010-10-05 |
| 7693357 | Methods and systems for eliminating deleterious polarization effects in an optical fiber dispersion compensation module | Abdellatif Marrakchi El Fellah, Michael Y. Frankel, Mark Steven Childers | 2010-04-06 |
| 7254327 | Switching status and performance monitoring technology for wavelength selective switch and optical networks | Shan Zhong, Vladimir Pelekhaty | 2007-08-07 |
| 7231107 | Flexible wavelength selective switch fabric with arbitrary add and drop capability | Shan Zhong | 2007-06-12 |
| 6795607 | Use of tunable laser for optical performance monitoring in WDM system | Vipul Bhatnagar, Michael Y. Frankel | 2004-09-21 |
| 6614959 | Methods of writing apodized fiber gratings and associated apparatuses | Victor Mizrahi | 2003-09-02 |
| 6567196 | Dense WDM optical multiplexer and demultiplexer | — | 2003-05-20 |
| 6459516 | Dense WDM add/drop multiplexer | Victor Mizrahi | 2002-10-01 |
| 6430341 | Waveguide coupler | Philip St. John Russell | 2002-08-06 |
| 6407863 | Dual transmission band interference filter | Vladimir Pelekhaty | 2002-06-18 |
| 6404948 | Dense WDM optical multiplexer and demultiplexer | Stephen B. Alexander, Victor Mizrahi, Henry H. Yaffe | 2002-06-11 |
| 6298187 | High power fiber gain media system achieved through power scaling via multiplexing | Robert G. Waarts, David F. Welch, Stephen G. Grubb, Donald R. Scifres | 2001-10-02 |
| 6281997 | Dense WDM optical multiplexer and demultiplexer | Stephen B. Alexander, Victor Mizrahi, Henry H. Yaffe | 2001-08-28 |