H04B 10/50575
To control the modulator dc bias
Official title: {to control the modulator DC bias}
H04B10/50575 (To control the modulator dc bias) appears on 302 US grants and 279 published applications in this corpus.
Search patents in H04B- Granted patents
- 302
- Published applications
- 279
- Assignees
- 139
- Inventors
- 548
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 1 |
| 2002 | 5 | 9 |
| 2003 | 9 | 11 |
| 2004 | 6 | 8 |
| 2005 | 2 | 10 |
| 2006 | 11 | 10 |
| 2007 | 6 | 13 |
| 2008 | 10 | 11 |
| 2009 | 5 | 8 |
| 2010 | 11 | 10 |
| 2011 | 13 | 11 |
| 2012 | 9 | 12 |
| 2013 | 14 | 14 |
| 2014 | 13 | 12 |
| 2015 | 17 | 17 |
| 2016 | 21 | 20 |
| 2017 | 26 | 16 |
| 2018 | 13 | 21 |
| 2019 | 25 | 18 |
| 2020 | 20 | 10 |
| 2021 | 8 | 7 |
| 2022 | 6 | 10 |
| 2023 | 7 | 5 |
| 2024 | 9 | 8 |
| 2025 | 6 | 4 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for in-phase and quadrature modulation16 Jun 2026US 12,659,044 B2Huawei Technologies Co., Ltd.
- Ring modulator baseline wander compensation17 Feb 2026US 12,556,283 B2Intel Corporation
- Communication device including nested modulator and bias control method for nested modulator10 Feb 2026US 12,549,258 B2NEC Corporation
- Optical transmitter and bias control method20 Jan 2026US 12,531,635 B2Fujitsu Limited
- In-phase (I) / quadrature (Q) correlation dither for modulator quadrature control18 Nov 2025US 12,476,711 B2Ciena Corporation
- Ring modulator baseline wander compensation30 Apr 2026US 2026/0121758 A1Intel Corporation
- Markers for dual-polarization optical systems26 Mar 2026US 2026/0088905 A1
- Implementation and analysis of 3 dimensional sweeps for iq modulator calibration26 Feb 2026US 2026/0058730 A1Ciena Corporation
- Radiofrequency device with multiple operating modes2 Oct 2025US 2025/0309848 A1STMicroelectronics International N. V.
- Multi-rate and multi-modulation ont and olt14 Aug 2025US 2025/0260916 A1ARRIS Enterprises LLC
Most cited
By later US patents
- Automatic bias control for electro-optic modulators111US 6,046,838 AKestrel Solutions, Inc. · 2000
- Optical transmitters linearized by means of parametric feedback100US 5,161,044 AHarmonic Lightwaves, Inc. · 1992
- Method for optical carrier suppression and quadrature control99US 7,266,306 B1Nortel Networks Limited · 2007
- Apparatus and method for linearizing an external optical modulator91US 5,321,543 AGeneral Instrument Corporation · 1994
- Optical transmitter85US 5,170,274 AFujitsu Limited · 1992