H04B 10/672
For controlling the power of the input optical signal
Official title: {for controlling the power of the input optical signal}
H04B10/672 (For controlling the power of the input optical signal) appears on 138 US grants and 127 published applications in this corpus.
Search patents in H04B- Granted patents
- 138
- Published applications
- 127
- Assignees
- 84
- Inventors
- 335
- 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 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 4 | 2 |
| 2003 | 2 | 6 |
| 2004 | 3 | 5 |
| 2005 | 2 | 3 |
| 2006 | 1 | 3 |
| 2007 | 3 | 4 |
| 2008 | 2 | 6 |
| 2009 | 2 | 4 |
| 2010 | 4 | 3 |
| 2011 | 4 | 7 |
| 2012 | 5 | 5 |
| 2013 | 1 | 4 |
| 2014 | 7 | 1 |
| 2015 | 6 | 7 |
| 2016 | 3 | 9 |
| 2017 | 10 | 4 |
| 2018 | 7 | 6 |
| 2019 | 7 | 6 |
| 2020 | 8 | 9 |
| 2021 | 11 | 7 |
| 2022 | 4 | 5 |
| 2023 | 13 | 11 |
| 2024 | 6 | 4 |
| 2025 | 2 | 3 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System for forming a configurable optical amplifier16 Jun 2026US 12,658,663 B2Huawei Technologies Co., Ltd.
- Optical transceiver24 Mar 2026US 12,587,285 B2Cig Photonics Japan Limited
- Optical module having electrically-connected substrate10 Mar 2026US 12,571,969 B2Hisense Broadband Multimedia Technologies Co., Ltd.
- Avalanche photodiode gain compensation for wide dynamic range17 Feb 2026US 12,553,994 B2Luminar Technologies, Inc.
- High speed bidirectional optical time-domain reflectometer (OTDR)-based testing of device under test13 Jan 2026US 12,526,044 B2Viavi Solutions Inc.
- Dynamic Spectral Equalization in Ladder Protected Optical Networks16 Jul 2026US 2026/0205206 A1Ciena Corporation
- Controlling receiver local oscillator power in a coherent modem to improve snr and increase receiver dynamic range28 May 2026US 2026/0149506 A1Ciena Corporation
- Optical receiving module, optical receiving device, and frequency adjustment method26 Jun 2025US 2025/0211338 A1
- Optical communications system with semiconductor optical amplifier for link loss correction17 Apr 2025US 2025/0125878 A1X Development LLC
- System for forming a configurable optical amplifier23 Jan 2025US 2025/0030216 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Signal level control circuitry for a fiber communications system73US 5,267,071 AScientific-Atlanta, Inc. · 1993
- Optical receiver with electrically variable attenuator52US 4,644,145 AStandard Elektrik Lorenz AG · 1987
- Receiver for optical digital transmission system45US 5,854,704 AAlcatel Submarine Networks · 1998
- Optical transmitter receiver and method of optical transmission and reception42US 6,647,212 B1Sony Corporation · 2003
- Polarization insensitive optical communication device utilizing optical preamplification29US 4,900,917 AAmerican Telephone and Telegraph Company, AT&T Bell Laboratories · 1990