H01S 5/1225
With a varying coupling constant along the optical axis
Official title: {with a varying coupling constant along the optical axis}
H01S5/1225 (With a varying coupling constant along the optical axis) appears on 97 US grants and 73 published applications in this corpus.
Search patents in H01S- Granted patents
- 97
- Published applications
- 73
- Assignees
- 62
- Inventors
- 199
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 4 |
| 2003 | 3 | 4 |
| 2004 | 5 | 5 |
| 2005 | 3 | 3 |
| 2006 | 3 | 0 |
| 2007 | 2 | 5 |
| 2008 | 2 | 2 |
| 2009 | 1 | 1 |
| 2010 | 5 | 2 |
| 2011 | 0 | 2 |
| 2012 | 2 | 0 |
| 2013 | 2 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 3 |
| 2016 | 2 | 3 |
| 2017 | 1 | 5 |
| 2018 | 6 | 3 |
| 2019 | 7 | 6 |
| 2020 | 2 | 3 |
| 2021 | 3 | 6 |
| 2022 | 3 | 7 |
| 2023 | 2 | 2 |
| 2024 | 2 | 1 |
| 2025 | 1 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- DFB with weak optical feedback9 Dec 2025US 12,494,619 B2II-Vi Delaware, Inc.
- Ultra-low noise, highly stable single-mode operation, high power, Bragg grating based semiconductor laser10 Dec 2024US 12,166,332 B2ColdQuanta, Inc.
- Two-dimensional photonic-crystal surface-emitting laser26 Nov 2024US 12,155,176 B2Kyoto University
- Method for integration of variable Bragg grating coupling coefficients30 May 2023US 11,664,640 B1United States of America as represented by the Administrator of NASA
- Fabrication of semiconductor structures28 Mar 2023US 11,616,344 B2International Business Machines Corporation
- Semiconductor Laser and Two-Channel Laser Array26 Mar 2026US 2026/0088589 A1NTT, Inc.
- Nitride semiconductor laser element23 Jan 2025US 2025/0030222 A1Osaka University
- Semiconductor laser16 Jan 2025US 2025/0023331 A1Lumentum Operations LLC
- Silicon photonic symmetric distributed feedback laser17 Oct 2024US 2024/0348006 A1OpenLight Photonics, Inc.
- Narrow linewidth semiconductor laser21 Dec 2023US 2023/0411929 A1Ioptis Corp.
Most cited
By later US patents
- Thermal compensators for waveguide DBR laser sources118US 5,870,417 ASDL, Inc. · 1999
- Phase mask with spatially variable diffraction efficiency80US 6,545,808 B1Institut National D'Optique · 2003
- Distributed reflector and wavelength-tunable semiconductor laser66US 5,325,392 ANippon Telegraph and Telephone Corporation · 1994
- Tunable laser diode having a distributed feedback structure47US 5,170,402 AFujitsu Limited · 1992
- Oscillation polarization mode selective semiconductor laser, light transmitter and optical communication system using the laser39US 5,901,166 ACanon Kabushiki Kaisha · 1999