Optical switches based on induced optical loss
US-12554174-B2 · Feb 17, 2026 · US
the optical waveguides being made of semiconducting materials
the optical waveguides being made of semiconducting materials · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02F1/3138 |
| Official title | {the optical waveguides being made of semiconducting materials} |
| Display label | the optical waveguides being made of semiconducting materials |
| Total patents | 41 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2018 | 7 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Optical phased array, laser assembly and method for operating same
US-2025237821-A1 · Jul 24, 2025 · US
Optical Switches Based on Induced Optical Loss
US-2024361663-A1 · Oct 31, 2024 · US
1 x N optical switch
US-12117712-B2 · Oct 15, 2024 · US
Optical Switches Based on Induced Optical Loss
US-2024302708-A1 · Sep 12, 2024 · US
Optical apparatus
US-11947240-B2 · Apr 2, 2024 · US
Device for switching optical signal
US-2023375896-A1 · Nov 23, 2023 · US
Optical switches based on induced optical loss
US-11782323-B2 · Oct 10, 2023 · US
1 x N Optical Switch
US-2023194952-A1 · Jun 22, 2023 · US
Optical splitter chip, optical splitter component, optical splitter apparatus, and optical fiber box
US-11644619-B2 · May 9, 2023 · US
Single optical phase array and photosensing system including the same
US-11619859-B2 · Apr 4, 2023 · US
Optical switches based on induced optical loss
US-2023047258-A1 · Feb 16, 2023 · US
Optical Splitter Chip, Optical Splitter Component, Optical Splitter Apparatus, and Optical Fiber Box
US-2022171128-A1 · Jun 2, 2022 · US
Single optical phase array and photosensing system incluing the same
US-2022137481-A1 · May 5, 2022 · US
Optical switches based on induced optical loss
US-11314143-B2 · Apr 26, 2022 · US
Optical splitter chip, optical splitter component, optical splitter apparatus, and optical fiber box
US-11280960-B2 · Mar 22, 2022 · US
Optical apparatus
US-2021271149-A1 · Sep 2, 2021 · US
Optical switches based on induced optical loss
US-2021003903-A1 · Jan 7, 2021 · US
Optical splitter chip, optical splitter component, optical splitter apparatus, and optical fiber box
US-2020284980-A1 · Sep 10, 2020 · US
Optical switches based on induced optical loss
US-10747085-B1 · Aug 18, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G02F1/3138?
- CPC G02F1/3138 is the Cooperative Patent Classification code for “the optical waveguides being made of semiconducting materials.”
- How many patents are filed under CPC G02F1/3138 (the optical waveguides being made of semiconducting materials)?
- Our database includes 41 publications tagged with this CPC code.
- Is patent activity under CPC G02F1/3138 growing?
- Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).