H04J 14/0239
In wdm-pon sharing multiple downstream wavelengths for groups of optical network units
Official title: {in WDM-PON sharing multiple downstream wavelengths for groups of optical network units [ONU], e.g. multicasting wavelengths}
H04J14/0239 (In wdm-pon sharing multiple downstream wavelengths for groups of optical network units) appears on 49 US grants and 58 published applications in this corpus.
Search patents in H04J- Granted patents
- 49
- Published applications
- 58
- Assignees
- 35
- Inventors
- 118
- Latest grant
- 10 Oct 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 1 | 1 |
| 2012 | 0 | 4 |
| 2013 | 2 | 3 |
| 2014 | 7 | 7 |
| 2015 | 3 | 10 |
| 2016 | 6 | 4 |
| 2017 | 7 | 5 |
| 2018 | 5 | 3 |
| 2019 | 2 | 6 |
| 2020 | 4 | 0 |
| 2021 | 4 | 4 |
| 2022 | 3 | 1 |
| 2023 | 4 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Methodology for efficient upstream multicast in PON networks10 Oct 2023US 11,784,913 B2Tellabs Enterprise, Inc.
- Systems and methods for dual-band modulation and injection-locking for coherent PON12 Sep 2023US 11,757,556 B1Cable Television Laboratories, Inc.
- Data communications system, optical line terminal, and baseband unit16 May 2023US 11,652,564 B2Huawei Technologies Co., Ltd.
- Downstream frame transfer device, transfer method and transfer program25 Apr 2023US 11,637,647 B2Nippon Telegraph and Telephone Corporation
- Expanded single fiber combining module6 Sep 2022US 11,438,088 B1AT&T Intellectual Property I, L. P.
- Conditional forward error correction decoding in a passive optical network19 Mar 2026US 2026/0081715 A1Nokia Solutions and Networks Oy
- Bandwidth allocation method, optical communication system, device, and storage medium4 Dec 2025US 2025/0373531 A1Zte Corporation
- Expanded single fiber combining module9 Mar 2023US 2023/0074322 A1AT&T Intellectual Property I, L. P.
- Downstream frame transfer device, transfer method and transfer program1 Sep 2022US 2022/0278765 A1Nippon Telegraph and Telephone Corporation
- Optical transmitting and receiving system28 Oct 2021US 2021/0336715 A1Electronics and Telecommunications Research Institute
Most cited
By later US patents
- System and method for performing high-speed communications over fiber optical networks38US 7,242,868 B22007
- Access multiplexers and methods for multiplexing telecommunication signals using an arrayed media converter11US 8,670,667 B1Adtran, Inc. · 2014
- Optical network unit, optical access network and a method for exchanging information9US 9,008,512 B2Technion Research & Development Foundation Limited · 2015
- Optical access network having emitter-free customer premise equipment and adaptive communication scheduling6US 8,687,976 B1Juniper Networks, Inc. · 2014
- Passive optical network system for the delivery of bi-directional RF services4US 7,965,939 B2Northpeak Enterprises, Inc. · 2011