G02B 6/29391
Power equalisation of different channels
Official title: {Power equalisation of different channels, e.g. power flattening}
G02B6/29391 (Power equalisation of different channels) appears on 99 US grants and 99 published applications in this corpus.
Search patents in G02B- Granted patents
- 99
- Published applications
- 99
- Assignees
- 62
- Inventors
- 163
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 3 |
| 2002 | 5 | 22 |
| 2003 | 17 | 22 |
| 2004 | 12 | 5 |
| 2005 | 14 | 3 |
| 2006 | 4 | 1 |
| 2007 | 2 | 5 |
| 2008 | 2 | 2 |
| 2009 | 5 | 3 |
| 2010 | 4 | 4 |
| 2011 | 0 | 0 |
| 2012 | 2 | 2 |
| 2013 | 2 | 2 |
| 2014 | 2 | 2 |
| 2015 | 2 | 2 |
| 2016 | 2 | 4 |
| 2017 | 3 | 1 |
| 2018 | 0 | 0 |
| 2019 | 2 | 7 |
| 2020 | 5 | 0 |
| 2021 | 2 | 0 |
| 2022 | 2 | 4 |
| 2023 | 1 | 2 |
| 2024 | 4 | 0 |
| 2025 | 1 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Compact light splitting devices and methods2 Dec 2025US 12,487,407 B2Apple Inc.
- Power equalizer and adjustment method therefor10 Sep 2024US 12,085,760 B2Huawei Technologies Co., Ltd.
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- System for data transmission in optical systems5 Mar 2024US 11,921,335 B2II-Vi Delaware, Inc.
- Multi-core fiber (mcf) gain flattening filter (gff) devices9 Jul 2026US 2026/0194718 A1II-VI Photonics, Inc.
- On-chip integrated wavelength division multiplexer and chip30 Jan 2025US 2025/0038877 A1Picmore Technology (Suzhou) Ltd.
- High-isolation light source filling device and method in wavelength division multiplexing system9 Jan 2025US 2025/0015895 A1Accelink Technologies Co., Ltd.
- Compact Light Splitting Devices and Methods30 Mar 2023US 2023/0094833 A1Apple Inc.
- Optical Switch and Optical Performance Monitoring Method Based On Optical Switch19 Jan 2023US 2023/0013921 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Modular all-optical cross-connect126US 6,614,953 B2Photuris, Inc. · 2003
- Optical fiber amplifier with gain equalizing circuit102US 5,436,760 ANEC Corporation · 1995
- Method and apparatus for dynamic equalization in wavelength division multiplexing92US 6,782,205 B2Silicon Light Machines Corporation · 2004
- Reconfigurable all-optical multiplexers with simultaneous add-drop capability53US 6,549,699 B2Capella Photonics, Inc. · 2003
- Resonant optical wave power control devices and methods52US 6,633,696 B1California Institute of Technology · 2003