H04J 14/06
Polarisation multiplex systems
H04J14/06 (Polarisation multiplex systems) appears on 957 US grants and 1,067 published applications in this corpus.
Search patents in H04J- Granted patents
- 957
- Published applications
- 1,067
- Assignees
- 272
- Inventors
- 1,528
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 3 |
| 2002 | 11 | 27 |
| 2003 | 16 | 19 |
| 2004 | 16 | 9 |
| 2005 | 11 | 15 |
| 2006 | 13 | 12 |
| 2007 | 5 | 14 |
| 2008 | 6 | 12 |
| 2009 | 16 | 28 |
| 2010 | 12 | 46 |
| 2011 | 21 | 58 |
| 2012 | 37 | 66 |
| 2013 | 52 | 47 |
| 2014 | 63 | 55 |
| 2015 | 62 | 75 |
| 2016 | 69 | 67 |
| 2017 | 88 | 60 |
| 2018 | 57 | 66 |
| 2019 | 67 | 67 |
| 2020 | 67 | 65 |
| 2021 | 52 | 53 |
| 2022 | 50 | 51 |
| 2023 | 46 | 45 |
| 2024 | 35 | 33 |
| 2025 | 26 | 47 |
| 2026 | 25 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical transmitter including splitting elements, external modulators, and wavelength multiplexers, and optical transceiver including polarization separation elements, wavelength demultiplexers, polarization rotation elements, and photodetectors6 Oct 2026US 12,756,476 B2Mitsubishi Electric Corporation
- Electrical-to-coherent optical-to-electrical data communication cable assembly29 Sep 2026US 12,750,139 B2
- Digital signal processing circuit, method, receiver, and communication system8 Sep 2026US 12,732,282 B2NEC Corporation
- Signal processing apparatus, optical transmitting apparatus, optical receiving apparatus, optical transmission system, and signal processing method25 Aug 2026US 12,719,583 B2NEC Corporation
- Electronic demultiplexing for dual-polarization (DP) intensity-modulated direct detection (IMDD) optical communication systems7 Jul 2026US 12,676,679 B2Aloe Semiconductor Inc.
- Dual-polarization bidirectional optical devices1 Oct 2026US 2026/0303218 A1
- Optical multi-wavelength dual-polarization transceivers1 Oct 2026US 2026/0303248 A1Aloe Semiconductor Inc.
- Distortion estimation device, receiver, and distortion estimation method17 Sep 2026US 2026/0280710 A1NEC Corporation
- Optical amplification apparatus and optical amplification method3 Sep 2026US 2026/0259473 A1NTT, Inc.
- Ultra-wide tunable laser source with multi-band gain media integration27 Aug 2026US 2026/0254202 A1GouMax Technology, Inc.
Most cited
By later US patents
- Method and apparatus for improving spectral efficiency in wavelength division multiplexed transmission systems196US 6,134,033 ATyco Submarine Systems Ltd. · 2000
- System and method for communication using orbital angular momentum with multiple layer overlay modulation160US 9,077,577 B12015
- Methods for the optical transmission of polarization multiplex signals108US 7,865,080 B2Nokia Siemens Networks Oy · 2011
- Programmable wavelength router94US 5,867,291 AChorum Technologies LP · 1999
- Devices for depolarizing polarized light80US 6,498,869 B12002