H01S 3/1301
In optical amplifiers
Official title: {in optical amplifiers}
H01S3/1301 (In optical amplifiers) appears on 744 US grants and 615 published applications in this corpus.
Search patents in H01S- Granted patents
- 744
- Published applications
- 615
- Assignees
- 242
- Inventors
- 1,212
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 14 | 0 |
| 1997 | 12 | 0 |
| 1998 | 14 | 0 |
| 1999 | 26 | 0 |
| 2000 | 31 | 0 |
| 2001 | 30 | 14 |
| 2002 | 48 | 46 |
| 2003 | 40 | 39 |
| 2004 | 30 | 41 |
| 2005 | 31 | 26 |
| 2006 | 36 | 27 |
| 2007 | 21 | 25 |
| 2008 | 28 | 26 |
| 2009 | 17 | 15 |
| 2010 | 19 | 18 |
| 2011 | 20 | 20 |
| 2012 | 15 | 17 |
| 2013 | 21 | 20 |
| 2014 | 30 | 18 |
| 2015 | 21 | 17 |
| 2016 | 15 | 21 |
| 2017 | 16 | 13 |
| 2018 | 12 | 20 |
| 2019 | 18 | 24 |
| 2020 | 20 | 42 |
| 2021 | 18 | 29 |
| 2022 | 37 | 28 |
| 2023 | 23 | 18 |
| 2024 | 19 | 29 |
| 2025 | 23 | 8 |
| 2026 | 16 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pump modulation for optical amplifier link communication8 Sep 2026US 12,731,953 B2II-Vi Delaware, Inc.
- Optical signal amplification18 Aug 2026US 12,712,330 B21FINITY Inc.
- Doped fiber amplifier having pass-through pump laser with integrated optical isolator4 Aug 2026US 12,700,708 B2II-Vi Delaware, Inc.
- Optical amplifier21 Jul 2026US 12,689,172 B2NEC Corporation
- Optical amplifier, optical relay, and optical communication system16 Jun 2026US 12,658,662 B2NEC Corporation
- B-integral compensation in amplification of ultrashort laser pulses13 Aug 2026US 2026/0237957 A1Coherent Scotland Limited
- Digital control of lasers and associated systems, methods, and devices6 Aug 2026US 2026/0229833 A1Aeye, Inc.
- Optical Amplifier Failure Prediction Using Machine Learning23 Jul 2026US 2026/0213484 A1Ciena Corporation
- Raman Gain Measurements in Dynamically Controlled Optical Line Systems16 Jul 2026US 2026/0205194 A1Ciena Corporation
- Apparatus for providing optical radiation18 Jun 2026US 2026/0171747 A1
Most cited
By later US patents
- Optical amplifier with high energy levels systems providing high peak powers244US 5,867,305 ASDL, Inc. · 1999
- Optical amplifier having first and second stages and an attenuator controlled based on the gains of the first and second stages147US 6,049,413 ACiena Corporation · 2000
- Raman amplifier, optical repeater, and raman amplification method114US 6,292,288 B1Furukawa Electric Co., Ltd. · 2001
- Apparatus and method for optical equalization and amplification111US 5,812,710 AFujitsu Limited · 1998
- Multi-wavelength light amplifier108US 6,055,092 AFujitsu Limited · 2000