H01S 3/0672
Non-uniform radial doping
Official title: {Non-uniform radial doping}
H01S3/0672 (Non-uniform radial doping) appears on 122 US grants and 113 published applications in this corpus.
Search patents in H01S- Granted patents
- 122
- Published applications
- 113
- Assignees
- 77
- Inventors
- 292
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 5 | 2 |
| 2002 | 2 | 6 |
| 2003 | 4 | 10 |
| 2004 | 4 | 4 |
| 2005 | 7 | 3 |
| 2006 | 5 | 2 |
| 2007 | 3 | 2 |
| 2008 | 2 | 3 |
| 2009 | 2 | 7 |
| 2010 | 5 | 12 |
| 2011 | 7 | 9 |
| 2012 | 7 | 5 |
| 2013 | 6 | 4 |
| 2014 | 8 | 3 |
| 2015 | 8 | 5 |
| 2016 | 5 | 4 |
| 2017 | 4 | 1 |
| 2018 | 1 | 4 |
| 2019 | 4 | 8 |
| 2020 | 3 | 4 |
| 2021 | 6 | 6 |
| 2022 | 4 | 4 |
| 2023 | 0 | 1 |
| 2024 | 3 | 3 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Optical element and associated manufacturing method23 Jan 2024US 11,880,063 B2Centre National De La Recherche Scientifique
- Side-coupled active and passive waveguides with embedded elements for improved light absorption13 Nov 2025US 2025/0350083 A1Ipg Photonics Corporation
- Erbium-doped fiber and preparation method for erbium-doped fiber21 Mar 2024US 2024/0097395 A1Huawei Technologies Co., Ltd.
- Optical fiber amplifier for reducing differential modal gain of an optical fiber29 Feb 2024US 2024/0072506 A1Huawei Technologies Canada Co., Ltd.
- Fiber optic amplifier29 Feb 2024US 2024/0072507 A1Nippon Telegraph and Telephone Corporation
- Systems and methods to increase pump conversion efficiency of an optical fiber9 Feb 2023US 2023/0038367 A1Huawei Technologies Canada Co., Ltd.
Most cited
By later US patents
- Ytterbium-doped optical fiber, fiber laser and fiber amplifier219US 8,941,912 B2Fujikura Ltd. · 2015
- Article comprising an optical fiber laser93US 5,237,576 AAT&T Bell Laboratories · 1993
- Optical amplifiers and light source78US 6,288,835 B12001
- Erbium-doped fiber amplifier73US 5,005,175 AAT&T Bell Laboratories · 1991
- Optical fibre with doped core and doped inner cladding, for use in an optical fibre laser66US 5,291,501 AUniversity of Southhampton · 1994