H01S 5/12
The resonator having a periodic structure
Official title: the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers (comprising a photonic bandgap structure H01S5/11; surface-emitting lasers H01S5/18)
H01S5/12 (The resonator having a periodic structure) appears on 2,489 US grants and 2,355 published applications in this corpus.
Search patents in H01S- Granted patents
- 2,489
- Published applications
- 2,355
- Assignees
- 741
- Inventors
- 3,763
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 11 | 0 |
| 1987 | 16 | 0 |
| 1988 | 40 | 0 |
| 1989 | 51 | 0 |
| 1990 | 29 | 0 |
| 1991 | 30 | 0 |
| 1992 | 23 | 0 |
| 1993 | 35 | 0 |
| 1994 | 40 | 0 |
| 1995 | 28 | 0 |
| 1996 | 32 | 0 |
| 1997 | 34 | 0 |
| 1998 | 37 | 0 |
| 1999 | 38 | 0 |
| 2000 | 43 | 0 |
| 2001 | 41 | 25 |
| 2002 | 45 | 77 |
| 2003 | 67 | 121 |
| 2004 | 91 | 91 |
| 2005 | 67 | 95 |
| 2006 | 89 | 56 |
| 2007 | 37 | 67 |
| 2008 | 43 | 74 |
| 2009 | 70 | 81 |
| 2010 | 81 | 74 |
| 2011 | 47 | 66 |
| 2012 | 57 | 63 |
| 2013 | 62 | 82 |
| 2014 | 80 | 73 |
| 2015 | 77 | 100 |
| 2016 | 89 | 92 |
| 2017 | 113 | 104 |
| 2018 | 108 | 125 |
| 2019 | 116 | 116 |
| 2020 | 88 | 113 |
| 2021 | 107 | 146 |
| 2022 | 80 | 147 |
| 2023 | 91 | 93 |
| 2024 | 79 | 103 |
| 2025 | 74 | 92 |
| 2026 | 59 | 79 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01S 5/125Distributed bragg reflector [dbr] lasers798
- H01S 5/1206Having a non constant or multiplicity of periods502
- H01S 5/1228Dfb lasers with a complex coupled grating286
- H01S 5/1231Grating growth or overgrowth details247
- H01S 5/124Incorporating phase shifts235
- H01S 5/1203Over only a part of the length of the active region123
- H01S 5/1237Lateral grating, i.e. grating only adjacent ridge or mesa110
- H01S 5/1225With a varying coupling constant along the optical axis97
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Recent patents
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Most cited
By later US patents
- Method and apparatus for performing optical frequency domain reflectometry488US 6,160,826 AMassachusetts Institute of Technology · 2000
- Method and apparatus for performing optical measurements using a rapidly frequency-tuned laser478US 5,956,355 AMassachusetts Institute of Technology · 1999
- Optical semiconductor device with diffraction grating structure249US 5,926,493 ASDL, Inc. · 1999
- Narrow spectral width high-power distributed feedback semiconductor lasers195US 6,195,381 B1Wisconsin Alumni Research Foundation · 2001
- Semiconductor diode laser array193US 4,318,058 ANippon Electric Co., Ltd. · 1982