H04B 10/2557
Cross-phase modulation [xpm]
Official title: Cross-phase modulation [XPM]
H04B10/2557 (Cross-phase modulation [xpm]) appears on 67 US grants and 63 published applications in this corpus.
Search patents in H04B- Granted patents
- 67
- Published applications
- 63
- Assignees
- 41
- Inventors
- 154
- Latest grant
- 8 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 5 |
| 2003 | 3 | 2 |
| 2004 | 2 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 1 | 3 |
| 2011 | 2 | 3 |
| 2012 | 3 | 3 |
| 2013 | 0 | 2 |
| 2014 | 1 | 2 |
| 2015 | 5 | 7 |
| 2016 | 3 | 3 |
| 2017 | 8 | 5 |
| 2018 | 5 | 8 |
| 2019 | 6 | 2 |
| 2020 | 4 | 3 |
| 2021 | 3 | 2 |
| 2022 | 2 | 3 |
| 2023 | 4 | 4 |
| 2024 | 2 | 2 |
| 2025 | 2 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wide-band device for measuring the cross-correlation of signals8 Jul 2025US 12,355,489 B2Centre National De La Recherche Scientifique
- Phase difference distribution estimation method and phase difference distribution estimation apparatus21 Jan 2025US 12,206,450 B2Nippon Telegraph and Telephone Corporation
- Method and apparatus for evaluating transmitter performance capabilities in a passive optical network22 Oct 2024US 12,126,948 B2Nokia Solutions and Networks Oy
- Optical encoder devices and systems28 May 2024US 11,996,889 B2Lawrence Livermore National Security, LLC
- Optical transmitter and transmission method23 May 2023US 11,658,748 B2Huawei Technologies Co., Ltd.
- Minimizing phase-delay-induced signal loss in optical fibers19 Mar 2026US 2026/0081682 A1AT&T Communications Services India Private Limited
- Optical encoder devices and systems6 Jun 2024US 2024/0187096 A1Lawrence Livermore National Security, LLC
- Wide-band device for measuring the cross-correlation of signals4 Jan 2024US 2024/0007188 A1Centre National De La Recherche Scientifique
- Method and apparatus for evaluating transmitter performance capabilities in a passive optical network23 Nov 2023US 2023/0379607 A1Nokia Solutions and Networks Oy
- Phase difference distribution estimation method and phase difference distribution estimation apparatus14 Sep 2023US 2023/0291471 A1Nippon Telegraph and Telephone Corporation
Most cited
By later US patents
- Method and apparatus for scrambling the polarization of signal lights forming a wavelength division multiplexed signal light61US 5,841,557 AFujitsu Limited · 1998
- Equalization, pulse shaping and regeneration of optical signals53US 6,067,180 ANortel Networks Limited · 2000
- Transmission system with cross-phase modulation compensation45US 6,124,960 ANorthern Telecom Limited · 2000
- Wavelength division multiplexed system having reduced cross-phase modulation38US 6,381,048 B1Lucent Technologies Inc. · 2002
- Optical amplifying transmission system and optical amplifier20US 6,115,173 AKDD Corporation · 2000