G02F 1/0152
Using free carrier effects
Official title: {using free carrier effects, e.g. plasma effect}
G02F1/0152 (Using free carrier effects) appears on 175 US grants and 156 published applications in this corpus.
Search patents in G02F- Granted patents
- 175
- Published applications
- 156
- Assignees
- 96
- Inventors
- 303
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 6 | 4 |
| 2003 | 10 | 26 |
| 2004 | 9 | 6 |
| 2005 | 11 | 7 |
| 2006 | 6 | 4 |
| 2007 | 3 | 3 |
| 2008 | 4 | 3 |
| 2009 | 2 | 4 |
| 2010 | 4 | 2 |
| 2011 | 2 | 10 |
| 2012 | 4 | 2 |
| 2013 | 6 | 4 |
| 2014 | 1 | 5 |
| 2015 | 6 | 11 |
| 2016 | 13 | 14 |
| 2017 | 12 | 11 |
| 2018 | 10 | 6 |
| 2019 | 6 | 5 |
| 2020 | 5 | 4 |
| 2021 | 5 | 3 |
| 2022 | 6 | 4 |
| 2023 | 2 | 4 |
| 2024 | 1 | 6 |
| 2025 | 5 | 4 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus and method for intensity modulation in a photonic computing system based on interferometric coupling9 Jun 2026US 12,650,629 B2Huawei Technologies Canada Co., Ltd.
- Electro-optical modulator using waveguides with overlapping ridges24 Feb 2026US 12,560,831 B2Cisco Technology, Inc.
- Photonic semiconductor-insulator-semiconductor modulator and methods for forming the same23 Dec 2025US 12,504,654 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Silicon optical phase shifter with a series of P—N junctions12 Aug 2025US 12,386,211 B2Nokia Solutions and Networks Oy
- Optical device including a grated optical waveguide to improve modulation efficiency3 Jun 2025US 12,321,049 B2Hewlett Packard Enterprise Development LP
- Optical modulators, methods of manufacturing the same and apparatus including optical modulator7 May 2026US 2026/0126678 A1Samsung Electronics Co., Ltd.
- Semiconductor device and method for manufacturing the same16 Apr 2026US 2026/0104604 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Photonic semiconductor-insulator-semiconductor modulator and methods for forming the same12 Mar 2026US 2026/0072300 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Non-volatile optical memory1 Jan 2026US 2026/0003215 A1Hewlett Packard Enterprise Development LP
- Optical modulators for photonics devices and methods therefor11 Dec 2025US 2025/0377560 A1
Most cited
By later US patents
- Electro-optical silicon devices95US 4,787,691 AThe United States of America as represented by the Secretary of the Air Force · 1988
- Integrated silicon pin diode electro-optic waveguide93US 5,757,986 ABookham Technology PLC · 1998
- Electro-optic device78US 5,908,305 ABookham Technology PLC · 1999
- Optical coupler having evanescent coupling region70US 6,944,369 B2SiOptical, Inc. · 2005
- Method and apparatus for optically modulating light through the back side of an integrated circuit die65US 6,075,908 AIntel Corporation · 2000