H01S 5/1228
Dfb lasers with a complex coupled grating
Official title: {DFB lasers with a complex coupled grating, e.g. gain or loss coupling}
H01S5/1228 (Dfb lasers with a complex coupled grating) appears on 286 US grants and 198 published applications in this corpus.
Search patents in H01S- Granted patents
- 286
- Published applications
- 198
- Assignees
- 134
- Inventors
- 564
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 9 | 0 |
| 1995 | 6 | 0 |
| 1996 | 9 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 8 | 0 |
| 2000 | 9 | 0 |
| 2001 | 6 | 4 |
| 2002 | 10 | 14 |
| 2003 | 16 | 27 |
| 2004 | 14 | 12 |
| 2005 | 10 | 31 |
| 2006 | 26 | 11 |
| 2007 | 10 | 17 |
| 2008 | 10 | 5 |
| 2009 | 11 | 5 |
| 2010 | 13 | 4 |
| 2011 | 3 | 7 |
| 2012 | 5 | 4 |
| 2013 | 5 | 2 |
| 2014 | 7 | 5 |
| 2015 | 6 | 3 |
| 2016 | 6 | 4 |
| 2017 | 0 | 3 |
| 2018 | 5 | 4 |
| 2019 | 4 | 4 |
| 2020 | 4 | 7 |
| 2021 | 6 | 6 |
| 2022 | 1 | 7 |
| 2023 | 5 | 4 |
| 2024 | 4 | 2 |
| 2025 | 1 | 6 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ridge-shaped laser structure and surface etched grating semiconductor laser with periodic pumping14 Apr 2026US 12,603,477 B2Shenzhen Banyan Photonics Technologies Co., Ltd.
- Distributed feedback laser with complex coupling24 Mar 2026US 12,586,985 B2Nokia Solutions and Networks Oy
- Semiconductor laser, optical transmitter component, optical line terminal, and optical network unit3 Feb 2026US 12,542,423 B2Huawei Technologies Co., Ltd.
- High-power, single-spatial-mode quantum cascade lasers9 Sep 2025US 12,413,047 B2Wisconsin Alumni Research Foundation
- Synthesized aperiodic gratings and method of manufacture24 Dec 2024US 12,174,370 B2National Research Council of Canada
- Cavity design for multi-wavelength lasers19 Jun 2025US 2025/0202193 A1Quintessent Inc.
- Quantum dot distributed reflector laser22 May 2025US 2025/0167524 A1
- Distributed feedback semiconductor laser assembly24 Apr 2025US 2025/0132538 A1
- Distributed feedback lasers and methods for fabricating such lasers6 Feb 2025US 2025/0047068 A1Almae Technologies
- Optical devices30 Jan 2025US 2025/0038483 A1
Most cited
By later US patents
- Method for achieving improved epitaxy quality (surface texture and defect density) on free-standing (aluminum, indium, gallium) nitride ((al,in,ga)n) substrates for opto-electronic and electronic devices158US 6,447,604 B1Advanced Technology Materials, Inc. · 2002
- Semiconductor optical device with nanowhiskers126US 5,332,910 AHitachi, Ltd. · 1994
- Resonant-periodic-gain distributed-feedback surface-emitting semiconductor laser107US 5,052,016 AUniversity of New Mexico · 1991
- DFB laser diode structure having complex optical grating coupling98US 5,953,361 ASiemens Aktiengesellschaft · 1999
- Unipolar semiconductor laser92US 5,457,709 AAT&T IPM Corp. · 1995