Issued Patents All Time
Showing 1–25 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12405136 | Vibration sensing over passive optical networks (PONs) using forwarding optical phase retrieval and time-domain multiplexed (TDM) switching | Ezra Ip, Ting Wang | 2025-09-02 |
| 12332394 | Fiber sensing using supervisory path of submarine cables | Fatih Yaman, Ezra Ip, Hussam G. Batshon, Eduardo Mateo Rodriguez, Kohei Nakamura +2 more | 2025-06-17 |
| 12287234 | Distributed acoustic sensing sensitivity enhancement using MIMO sampling and phase recombination | Ezra Ip | 2025-04-29 |
| 12273170 | Methods and devices for beamforming | Jiying Xu, Hao Zhang, Huaisong Zhu | 2025-04-08 |
| 12206489 | Long distance distributed fiber optic sensing (DFOS) and WDM communications over repeated fiber spans using all-raman amplification and coding schemes | Ezra Ip | 2025-01-21 |
| 12164944 | Enhancing accessibility of topology diagram-related applications | Xiao Lin Zhang, Yucong Jin, Ryan William Shugart, Sarah Higley, Jie Qiu +1 more | 2024-12-10 |
| 12135234 | Frequency-drift compensation in chirped-pulse-based distributed acoustic sensing | Ezra Ip | 2024-11-05 |
| 12055803 | Distributed acoustic sensing using dynamic range suppression | Ezra Ip, Philip Nan Ji, Shuji Murakami | 2024-08-06 |
| 11982552 | Vibration detection using phase recovered from an optical transponder with coherent detection | Ezra Ip | 2024-05-14 |
| 11960042 | Laser noise reduction for laser interferometry | Ezra Ip, Fatih Yaman | 2024-04-16 |
| 11920975 | Repeater design for distributed acoustic sensing on multispan fiber links | Ezra Ip, Fatih Yaman, Shinsuke Fujisawa | 2024-03-05 |
| 11733088 | Spatial averaging method for coherent distributed acoustic sensing | Junqiang Hu, Ezra Ip | 2023-08-22 |
| 11692867 | Polarization diversity combining method in coherent DAS maintaining phase continuity | Junqiang Hu, Ezra Ip | 2023-07-04 |
| 11664893 | Suppressed out-of-band level for increasing loss margin and stable ABC operation of coded DFOS system | Junqiang Hu | 2023-05-30 |
| 11566937 | Rayleigh fading mitigation via short pulse coherent distributed acoustic sensing with multi-location beating-term combination | Ezra Ip, Junqiang Hu, Shuji Murakami | 2023-01-31 |
| 11543287 | Distributed acoustic sensing using multi-band time-gated digital orthogonal frequency domain reflectometry | Ezra Ip | 2023-01-03 |
| 11463171 | Bidirectional optical communication and sensing WDM architecture using same fiber transmission band | Ezra Ip, Philip Nan Ji, Ming-Fang Huang | 2022-10-04 |
| 11461635 | Neural network transfer learning for quality of transmission prediction | Shaoliang Zhang, Ezra Ip, Weiyang Mo | 2022-10-04 |
| 11391622 | Optical fiber sensing system with reduced spatial resolution and noise for multiple application uses | Ezra Ip, Junqiang Hu, Philip Nan Ji, Shuji Murakami, Yaowen Li | 2022-07-19 |
| 11378443 | Performance of Rayleigh-based phase-OTDR with correlation-based diversity combining and bias removal | Ezra Ip | 2022-07-05 |
| 11320304 | Multi-frequency coherent distributed acoustic sensing (DAS) with single transmitter / receiver pair using offset Tx / Rx frequency framing scheme | Ezra Ip | 2022-05-03 |
| 11296786 | Constant amplitude coded DFOS using out-of-band signaling | Ezra Ip, Fatih Yaman | 2022-04-05 |
| 11193801 | Amplifier dynamics compensation for brillouin optical time-domain reflectometry | Ezra Ip | 2021-12-07 |
| 11159200 | High speed frequency hopping DAS interrogation using AOM-gated re-circulating loop and frequency-shifted receiver LO | Ezra Ip, Giovanni Milione, Fatih Yaman | 2021-10-26 |
| 11133865 | Optical network performance evaluation using a hybrid neural network | Shaoliang Zhang, Ezra Ip, Jiakai Yu | 2021-09-28 |