Equipment and method for measuring loss and crosstalk that occur in optical fiber transmission line
US-2024377282-A1 · Nov 14, 2024 · US
by using interferometer
by using interferometer · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01M11/331 |
| Official title | {by using interferometer} |
| Display label | by using interferometer |
| Total patents | 93 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 10 |
| 2018 | 5 |
| 2019 | 10 |
| 2020 | 10 |
| 2021 | 11 |
| 2022 | 11 |
| 2023 | 5 |
| 2024 | 10 |
| 2025 | 8 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods and apparatus to determine a twist parameter and/or a bend angle associated with a multi-core fiber
US-11473902-B2 · Oct 18, 2022 · US
Estimating mode field distribution in optical fibers from guided acoustic wave brillouin scattering
US-11467061-B2 · Oct 11, 2022 · US
Line monitoring system having heterodyne coherent detection
US-11415481-B2 · Aug 16, 2022 · US
Phase-distortion mitigation for an optical vector network analyzer
US-2022244136-A1 · Aug 4, 2022 · US
Loss monitoring in photonic circuit fabrication
US-2022065798-A1 · Mar 3, 2022 · US
Line monitoring system having heterodyne coherent detection
US-2022050014-A1 · Feb 17, 2022 · US
Optical and functional metrology of microstructured optical fibers
US-11209338-B1 · Dec 28, 2021 · US
Measuring device for polarization-maintaining optical fiber spindle differential delay
US-11159233-B2 · Oct 26, 2021 · US
Method and Apparatus for Optical Sensing
US-2021325238-A1 · Oct 21, 2021 · US
Optical device and method of testing optical device
US-2021270698-A1 · Sep 2, 2021 · US
Fiber-optic testing source and fiber-optic testing receiver for multi-fiber cable testing
US-2021239568-A1 · Aug 5, 2021 · US
Method and apparatus for optical sensing
US-11079269-B2 · Aug 3, 2021 · US
Measuring Device for Polarization-maintaining Optical Fiber Spindle Differential Delay
US-2021226700-A1 · Jul 22, 2021 · US
Fiber-optic testing source and fiber-optic testing receiver for multi-fiber cable testing
US-11002631-B2 · May 11, 2021 · US
Methods and apparatus to determine a twist parameter and/or a bend angle associated with a multi-core fiber
US-2021131796-A1 · May 6, 2021 · US
Optical line testing device using optical signals having continuous waveform to identify fault location in optical line
US-10935457-B2 · Mar 2, 2021 · US
Methods and apparatus to determine a twist parameter and/or a bend angle associated with a multi-core fiber
US-10921117-B2 · Feb 16, 2021 · US
Optical and functional metrology of microstructured optical fibers
US-10830667-B1 · Nov 10, 2020 · US
Methods and apparatus to determine a twist parameter and/or a bend angle associated with a multi-core fiber
US-2020318951-A1 · Oct 8, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01M11/331?
- CPC G01M11/331 is the Cooperative Patent Classification code for “by using interferometer.”
- How many patents are filed under CPC G01M11/331 (by using interferometer)?
- Our database includes 93 publications tagged with this CPC code.
- Is patent activity under CPC G01M11/331 growing?
- Publication counts under this code: 10 in 2024 vs 8 in 2025 (latest complete years).