H04B 2210/07
Monitoring an optical transmission system using a supervisory signal
H04B2210/07 (Monitoring an optical transmission system using a supervisory signal) appears on 574 US grants and 435 published applications in this corpus.
Search patents in H04B- Granted patents
- 574
- Published applications
- 435
- Assignees
- 197
- Inventors
- 1,111
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 9 | 0 |
| 1996 | 20 | 0 |
| 1997 | 8 | 0 |
| 1998 | 20 | 0 |
| 1999 | 19 | 0 |
| 2000 | 19 | 0 |
| 2001 | 23 | 8 |
| 2002 | 24 | 31 |
| 2003 | 24 | 36 |
| 2004 | 18 | 48 |
| 2005 | 25 | 30 |
| 2006 | 29 | 12 |
| 2007 | 25 | 7 |
| 2008 | 20 | 10 |
| 2009 | 8 | 13 |
| 2010 | 17 | 7 |
| 2011 | 7 | 11 |
| 2012 | 12 | 19 |
| 2013 | 9 | 11 |
| 2014 | 15 | 19 |
| 2015 | 17 | 21 |
| 2016 | 16 | 24 |
| 2017 | 31 | 25 |
| 2018 | 23 | 18 |
| 2019 | 28 | 22 |
| 2020 | 18 | 18 |
| 2021 | 17 | 7 |
| 2022 | 8 | 13 |
| 2023 | 13 | 8 |
| 2024 | 6 | 4 |
| 2025 | 6 | 6 |
| 2026 | 2 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04B 2210/078Using a separate wavelengthIndexing code213
- H04B 2210/074Using a superposed, over-modulated signalIndexing code154
- H04B 2210/075Using a pilot toneIndexing code145
- H04B 2210/071Using alarmsIndexing code61
- H04B 2210/072Using an overhead signalIndexing code59
- H04B 2210/077Using a separate fibreIndexing code40
Recent patents
- Optical transmission line monitoring device, optical transmission line monitoring method, and recording medium storing optical transmission line monitoring program25 Aug 2026US 12,719,570 B2NEC Corporation
- Out-of-band communication channel for subcarrier-based optical communication systems17 Mar 2026US 12,580,657 B2Infinera Corporation
- Coherent optical reception device and coherent optical reception method14 Oct 2025US 12,445,205 B2NTT, Inc.
- Optical module and parameter transmission method, detection method, control method thereof, and fronthaul system15 Apr 2025US 12,278,663 B2Zte Corporation
- Management and control system of wavelength-multiplexed subranging electro-optic modulator (SEOM)s for high dynamic range applications25 Mar 2025US 12,261,642 B1Seaford Holdings, LLC
- Transmitter, receiver, and control method18 Jun 2026US 2026/0172117 A1NTT, Inc.
- Optical transmission and reception device and optical receiver7 May 2026US 2026/0128799 A1Mitsubishi Electric Corporation
- Hollow core fiber-based line-system with out-of-band optical supervisory channel30 Apr 2026US 2026/0121746 A1Microsoft Technology Licensing, LLC
- Pilot-assisted fiber length estimation23 Apr 2026US 2026/0113114 A1Marvell Asia Pte Ltd
- Optical transmission system and optical transmission device26 Mar 2026US 2026/0088897 A11FINITY Inc.
Most cited
By later US patents
- Method and system for detecting optical faults within the optical domain of a fiber communication network248US 6,005,694 AMCI WorldCom, Inc. · 1999
- Method and system for transporting ancillary network data160US 6,108,113 AMCI Communications Corporation · 2000
- Method and apparatus for monitoring performance of optical transmission systems159US 5,513,029 ANorthern Telecom Limited · 1996
- Fault detection for all-optical add-drop multiplexer125US 5,867,289 AInternational Business Machines Corporation · 1999
- Passive optical communication network with broadband upgrade115US 5,321,541 AAT&T Bell Laboratories · 1994