H04J 14/0257
Wavelength assignment algorithms
Official title: {Wavelength assignment algorithms}
H04J14/0257 (Wavelength assignment algorithms) appears on 513 US grants and 562 published applications in this corpus.
Search patents in H04J- Granted patents
- 513
- Published applications
- 562
- Assignees
- 135
- Inventors
- 847
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 0 | 7 |
| 2004 | 1 | 3 |
| 2005 | 0 | 1 |
| 2006 | 3 | 3 |
| 2007 | 2 | 1 |
| 2008 | 3 | 5 |
| 2009 | 5 | 21 |
| 2010 | 9 | 38 |
| 2011 | 13 | 29 |
| 2012 | 26 | 68 |
| 2013 | 39 | 55 |
| 2014 | 58 | 44 |
| 2015 | 62 | 44 |
| 2016 | 54 | 40 |
| 2017 | 40 | 31 |
| 2018 | 33 | 26 |
| 2019 | 41 | 28 |
| 2020 | 29 | 19 |
| 2021 | 19 | 25 |
| 2022 | 17 | 21 |
| 2023 | 21 | 23 |
| 2024 | 19 | 14 |
| 2025 | 13 | 10 |
| 2026 | 5 | 4 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Optical network unit, central office node and methods of configuring an optical network unit22 Sep 2026US 12,744,616 B2Telefonaktiebolaget LM Ericsson (publ)
- End-to-end secure communications for privileged 5G network traffic16 Jun 2026US 12,659,792 B2Microsoft Technology Licensing, LLC
- Partial activation of a media channel on channel holder-based optical links21 Apr 2026US 12,609,782 B2Ciena Corporation
- Wavelength defragmentation apparatus, wavelength defragmentation method and program10 Feb 2026US 12,549,272 B2NTT, Inc.
- Optical transceiver and method for automatically setting wavelength thereof20 Jan 2026US 12,531,648 B2SOLiD, INC.
- Optical transmission system, optical transmission apparatus and optical transmission method27 Aug 2026US 2026/0254552 A1NTT, Inc.
- Gnsr-aware spectral slot assignment with wavelength converters6 Aug 2026US 2026/0230214 A11FINITY Inc.
- Programmable Wavelength-Selective Splitter23 Jul 2026US 2026/0213867 A1
- Channel bandwidth allocation method to increase effective roadm dwdm network capacity21 May 2026US 2026/0143265 A1AT&T Intellectual Property I, L. P.
- Optical frequency spectral optimization in dense wavelength division multiplexing (dwdm) flex grid system13 Nov 2025US 2025/0350359 A1Level 3 Communications, LLC
Most cited
By later US patents
- Optical power management in an optical network72US 6,304,347 B1ONI Systems Corp. · 2001
- Multi-chassis router with multiplexed optical interconnects56US 8,050,559 B2Juniper Networks, Inc. · 2011
- Dynamic performance monitoring systems and methods for optical networks42US 8,433,192 B2Ciena Corporation · 2013
- Passive optical network with asymmetric modulation scheme40US 8,320,760 B1Google Inc. · 2012
- Extending path computation element protocol to accommodate routing and wavelength assignment in wavelength switched optical networks40US 9,231,726 B2Futurewei Technologies, Inc. · 2016