G02B 6/29302
Based on birefringence or polarisation
Official title: {based on birefringence or polarisation, e.g. wavelength dependent birefringence, polarisation interferometers}
G02B6/29302 (Based on birefringence or polarisation) appears on 199 US grants and 145 published applications in this corpus.
Search patents in G02B- Granted patents
- 199
- Published applications
- 145
- Assignees
- 103
- Inventors
- 343
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 15 | 6 |
| 2002 | 24 | 27 |
| 2003 | 27 | 24 |
| 2004 | 22 | 9 |
| 2005 | 10 | 5 |
| 2006 | 6 | 5 |
| 2007 | 7 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 0 | 3 |
| 2012 | 1 | 1 |
| 2013 | 2 | 2 |
| 2014 | 4 | 2 |
| 2015 | 3 | 4 |
| 2016 | 4 | 5 |
| 2017 | 4 | 7 |
| 2018 | 2 | 3 |
| 2019 | 8 | 7 |
| 2020 | 7 | 4 |
| 2021 | 6 | 5 |
| 2022 | 6 | 9 |
| 2023 | 7 | 1 |
| 2024 | 2 | 4 |
| 2025 | 1 | 4 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polarization control in optical couplers16 Jun 2026US 12,656,554 B2Ciena Corporation
- Optical communication devices with selective signal preclusion3 Feb 2026US 12,541,060 B2Mellanox Technologies, Ltd.
- Photonic wavelength division multiplexing (WDM) receiver with polarization diversity and/or low reflectance11 Feb 2025US 12,222,552 B2Intel Corporation
- Wavelength selective switch6 Aug 2024US 12,055,759 B2O-Net Communications (USA) Inc.
- Evacuated gratings and methods of manufacturing13 Feb 2024US 11,899,238 B2DigiLens Inc.
- Optical module, optical system, optical transceiver module, lidar, and optical amplification system23 Jul 2026US 2026/0211185 A1Huawei Technologies Co., Ltd.
- Optical communication devices with selective signal preclusion21 May 2026US 2026/0140316 A1Mellanox Technologies, Ltd.
- Optical integrated circuit element5 Feb 2026US 2026/0036746 A1KYOCERA Corporation
- Compact wavelength selective switch15 Jan 2026US 2026/0016636 A1Molex Incorporated
- CWDM Bidirectional Circuit Using Silicon Photonics20 Nov 2025US 2025/0355185 A1Avago Technologies International Sales Pte. Limited
Most cited
By later US patents
- System and method for fabricating components of precise optical path length134US 6,459,487 B12002
- Tunable add/drop optical filter108US 5,606,439 AMacro-Vision Technology , Inc. · 1997
- Switchable wavelength router103US 5,694,233 AMacro-Vision Communications, L.L.C. · 1997
- Programmable wavelength router94US 5,867,291 AChorum Technologies LP · 1999
- Switchable wavelength router78US 5,912,748 AChorum Technologies LP · 1999