H04B 10/61
Coherent receivers
H04B10/61 (Coherent receivers) appears on 2,452 US grants and 2,561 published applications in this corpus.
Search patents in H04B- Granted patents
- 2,452
- Published applications
- 2,561
- Assignees
- 565
- Inventors
- 3,344
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 6 | 0 |
| 1988 | 12 | 0 |
| 1989 | 13 | 0 |
| 1990 | 13 | 0 |
| 1991 | 15 | 0 |
| 1992 | 19 | 0 |
| 1993 | 8 | 0 |
| 1994 | 10 | 0 |
| 1995 | 13 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 6 | 8 |
| 2003 | 8 | 8 |
| 2004 | 6 | 13 |
| 2005 | 5 | 16 |
| 2006 | 7 | 9 |
| 2007 | 15 | 14 |
| 2008 | 15 | 10 |
| 2009 | 12 | 33 |
| 2010 | 17 | 57 |
| 2011 | 24 | 71 |
| 2012 | 50 | 118 |
| 2013 | 65 | 96 |
| 2014 | 127 | 133 |
| 2015 | 147 | 130 |
| 2016 | 147 | 142 |
| 2017 | 191 | 156 |
| 2018 | 154 | 175 |
| 2019 | 193 | 179 |
| 2020 | 198 | 208 |
| 2021 | 173 | 184 |
| 2022 | 182 | 198 |
| 2023 | 182 | 183 |
| 2024 | 161 | 143 |
| 2025 | 124 | 156 |
| 2026 | 107 | 121 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04B 10/616Details of the electronic signal processing in coherent optical receivers1,385
- H04B 10/614Comprising one or more polarization beam splitters522
- H04B 10/615Arrangements affecting the optical part of the receiver325
- H04B 10/64Heterodyne , i.e. coherent receivers where, after the opto-electronic conversion, an electrical287
- H04B 10/613Including phase diversity234
- H04B 10/63Homodyne , i.e. coherent receivers where the local oscillator is locked in198
- H04B 10/65Intradyne, i.e. coherent receivers with a free running local oscillator having a189
- H04B 10/612For optical signals modulated with a format different from binary or higher-order179
Recent patents
- Chromatic dispersion estimation method for coherent optical network6 Oct 2026US 12,756,467 B1Cable Television Laboratories, Inc.
- Frequency comb-based analog coherent receiver for multi-wavelength optical links6 Oct 2026US 12,756,477 B2The Board of Trustees of the Leland Stanford Junior University
- Method and system for blind learning of volterra equalizer parameters6 Oct 2026US 12,756,478 B2Ciena Corporation
- Electrical-to-coherent optical-to-electrical data communication cable assembly29 Sep 2026US 12,750,139 B2
- Apparatus and method for polarization control in coherent optical reception system29 Sep 2026US 12,750,141 B2Electronics and Telecommunications Research Institute
- System and Method For Coherent Receivers With PCSELS Emitting In Two Directions8 Oct 2026US 2026/0312692 A1II-Vi Delaware, Inc.
- Segmented receiver for phase-modulated signals8 Oct 2026US 2026/0312693 A1Raytheon Company
- Method and system for adjusting overlap ratio between fast fourier transform (fft) blocks8 Oct 2026US 2026/0312856 A1Ciena Corporation
- Tunable optical fading in a receiver to improve out of band rejection for variable baud1 Oct 2026US 2026/0299205 A1Ciena Corporation
- Bi-directional dense wavelength multiplexed optical communication systems1 Oct 2026US 2026/0303217 A1Quintessent Inc.
Most cited
By later US patents
- Optical transmission apparatuses, methods, and systems122US 7,826,752 B1Level 3 Communications, LLC · 2010
- Low conversion rate digital dispersion compensation90US 7,701,842 B2Nortel Networks Limited · 2010
- Polarization-dependent and polarization-diversified opto-electronic devices using a strained quantum well80US 5,117,469 ABell Communications Research, Inc. · 1992
- Optical heterodyne receiver for fiber optic communications system76US 5,452,118 ASpire Corporation · 1995
- System and method for optical heterodyne detection of an optical signal including optical pre-selection that is adjusted to accurately track a local oscillator signal72US 7,027,743 B1Agilent Technologies, Inc. · 2006