Double chirp integrated waveguide bragg gratings
US-2025314823-A1 · Oct 9, 2025 · US
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Diffractive elements of the tunable type (G02B6/02195 takes precedence; optical modulation devices based on a change of the optical properties of the medium G02F1/00)
Diffractive elements of the tunable type (G02B6/02195 takes precedence; optical modulation devices based on a change of the optical properties of the medium G02F1/00) · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G02B6/29322 |
| Official title | {Diffractive elements of the tunable type (G02B6/02195 takes precedence; optical modulation devices based on a change of the optical properties of the medium G02F1/00)} |
| Display label | Diffractive elements of the tunable type (G02B6/02195 takes precedence; optical modulation devices based on a change of the optical properties of the medium G02F1/00) |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 4 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
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Single-ended output circulator
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Optical fiber filter with ultra-wide tuning range
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Multilayer metal stack heater
US-11262603-B2 · Mar 1, 2022 · US
Single-ended output circulator
US-2021294037-A1 · Sep 23, 2021 · US
Multilayer metal stack heater
US-2020393707-A1 · Dec 17, 2020 · US
Multi-channel, densely-spaced wavelength division multiplexing transceiver
US-10761263-B1 · Sep 1, 2020 · US
Fibre-optic communication system, a communication apparatus for the same, and a vehicle
US-10330502-B2 · Jun 25, 2019 · US
Systems and methods for dynamic spectral shaping in optical communications
US-10298317-B2 · May 21, 2019 · US
Systems and methods for dynamic spectral shaping in optical communications
US-2018269964-A1 · Sep 20, 2018 · US
Method for improved optical power stability and predictability in fiber optical networks
US-2018267266-A1 · Sep 20, 2018 · US
Fibre-optic communication system, a communication apparatus for the same, and a vehicle
US-2018149498-A1 · May 31, 2018 · US
Node device and method for controlling node device
US-9958612-B2 · May 1, 2018 · US
Communication apparatus
US-9939665-B2 · Apr 10, 2018 · US
Node device and method for controlling node device
US-2017299814-A1 · Oct 19, 2017 · US
Communication apparatus
US-2017123236-A1 · May 4, 2017 · US
Narrow bandwidth reflectors for reducing stimulated Brillouin scattering in optical cavities
US-9252559-B2 · Feb 2, 2016 · US