G02B 6/283
Couplers being tunable or adjustable
Official title: {couplers being tunable or adjustable}
G02B6/283 (Couplers being tunable or adjustable) appears on 78 US grants and 25 published applications in this corpus.
Search patents in G02B- Granted patents
- 78
- Published applications
- 25
- Assignees
- 53
- Inventors
- 143
- Latest grant
- 4 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 7 | 0 |
| 1985 | 9 | 0 |
| 1986 | 3 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 7 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 3 | 2 |
| 2004 | 1 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 2 |
| 2018 | 2 | 4 |
| 2019 | 1 | 0 |
| 2020 | 2 | 3 |
| 2021 | 2 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Optical multiplexing/demultiplexing method, optical multiplexing/demultiplexing circuit, and manufacturing method thereof4 Mar 2025US 12,242,111 B2Nippon Telegraph and Telephone Corporation
- Fiber optic terminals and fiber optic networks having variable ratio couplers30 Jan 2024US 11,886,010 B2Corning Research & Development Corporation
- Tunable filter2 Mar 2021US 10,935,727 B2Santec Corporation
- Adjustable wide-spectrum wavelength-insensitive directional coupler2 Feb 2021US 10,908,359 B2
- Broadband polarization beam splitter/combiner based on gradient waveguide directional coupler4 Feb 2020US 10,551,567 B2Wuhan Research Institute of Posts and Telecommunications
- Tunable-gap integrated photonic circuits3 Apr 2025US 2025/0110279 A1The MITRE Corporation
- Optical multiplexing/demultiplexing method, optical multiplexing/demultiplexing circuit, and manufacturing method thereof30 Mar 2023US 2023/0100044 A1Nippon Telegraph and Telephone Corporation
- Fiber optic terminals and fiber optic networks having variable ratio couplers8 Apr 2021US 2021/0103099 A1Corning Research & Development Corporation
- Tunable filter6 Aug 2020US 2020/0249399 A1Santec Corporation
- Adjustable Wide-Spectrum Wavelength-Insensitive Directional Coupler7 May 2020US 2020/0142130 A1Henan Shijia Photons Technology Co., Ltd.
Most cited
By later US patents
- Optical fiber coupler with tunable coupling ratio and method of making171US 4,763,977 ACanadian Patents and Development Limited-Societe · 1988
- Variable coupler fiberoptic sensor143US 4,634,858 ASperry Corporation · 1987
- Coupled communications fibers131US 4,315,666 A1982
- Fiber optic directional coupler93US 4,493,528 AThe Board of Trustees of the Leland Stanford Junior University · 1985
- Fiber optic switch and discretely variable delay line87US 4,723,827 AThe Board of Trustees of the Leland Stanford Junior University · 1988