H04B 10/07951
Monitoring or measuring chromatic dispersion or pmd
Official title: {Monitoring or measuring chromatic dispersion or PMD}
H04B10/07951 (Monitoring or measuring chromatic dispersion or pmd) appears on 189 US grants and 205 published applications in this corpus.
Search patents in H04B- Granted patents
- 189
- Published applications
- 205
- Assignees
- 94
- Inventors
- 440
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 6 |
| 2004 | 0 | 5 |
| 2005 | 2 | 5 |
| 2006 | 4 | 4 |
| 2007 | 8 | 4 |
| 2008 | 5 | 3 |
| 2009 | 5 | 9 |
| 2010 | 6 | 3 |
| 2011 | 4 | 4 |
| 2012 | 6 | 14 |
| 2013 | 9 | 3 |
| 2014 | 6 | 9 |
| 2015 | 11 | 9 |
| 2016 | 5 | 7 |
| 2017 | 16 | 15 |
| 2018 | 14 | 18 |
| 2019 | 16 | 8 |
| 2020 | 12 | 8 |
| 2021 | 14 | 13 |
| 2022 | 11 | 21 |
| 2023 | 9 | 8 |
| 2024 | 7 | 5 |
| 2025 | 8 | 14 |
| 2026 | 5 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and system for monitoring non-linear effects along an optical communication line22 Sep 2026US 12,744,599 B2Huawei Technologies Co., Ltd.
- Failure detection method integrated in optical amplifiers and remote optical transmitters for radio frequency on glass (RFOG) and distributed access architecture (DAA) cable television (CATV) networks11 Aug 2026US 12,706,669 B2ARRIS Enterprises LLC
- Locating disturbances in optical fibres2 Jun 2026US 12,647,181 B2Tampnet AS
- Optical transceiver with dispersion management7 Apr 2026US 12,597,999 B1Linktel Technologies Co., Ltd.
- Environmental disturbance detection and localization using coherent modem10 Mar 2026US 12,574,113 B2Ciena Corporation
- Locating disturbances in optical fibres17 Sep 2026US 2026/0280699 A1Tampnet AS
- Polarization fluctuation monitoring apparatus, communication system, and polarization fluctuation monitoring method27 Aug 2026US 2026/0254530 A1NEC Corporation
- Systems and methods for improving performance and reliability of a fiber optic network30 Apr 2026US 2026/0121741 A1Lumetec Inc.
- Passive optical network incorporating fiber monitoring at receiving equipment23 Apr 2026US 2026/0113112 A1Nokia Solutions and Networks Oy
- Pilot-assisted fiber length estimation23 Apr 2026US 2026/0113114 A1Marvell Asia Pte Ltd
Most cited
By later US patents
- Signal transmission system and method for supervising the same96US 6,229,631 B1Oki Electric Industry Co., Ltd. · 2001
- Optical transmission system73US 5,949,560 ANorthern Telecom Limited · 1999
- Location specific optical monitoring64US 7,376,358 B2Nortel Networks Limited · 2008
- Signal generating circuit, optical signal transmitting apparatus, signal receiving circuit, method for establishing optical signal synchronization, and optical signal synchronization system51US 8,929,750 B2Nippon Telegraph and Telephone Corporation · 2015
- Systems and method of multi-band pilot tone based optical performance monitoring48US 10,523,315 B2Huawei Technologies Co., Ltd. · 2019