Method and apparatus for controlling optical fiber amplifier, system, transmission node and storage medium
US-12592536-B2 · Mar 31, 2026 · US
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Dou Liang patents
Dou Liang is listed as an inventor on 61 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Dou Liang |
| Total patents | 61 |
| First publication | Jan 8, 2015 |
| Latest publication | Mar 31, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Optical transmission system and data communication system
US-12529842-B2 · Jan 20, 2026 · US
Spectrum adjustment method for optical transmission system and network management system
US-2024421933-A1 · Dec 19, 2024 · US
Method and apparatus for controlling optical fiber amplifier, system, transmission node and storage medium
US-2024339800-A1 · Oct 10, 2024 · US
Method and apparatus for calculating configuration of optical transmission network, and optical transmission network system
US-12113572-B2 · Oct 8, 2024 · US
Method and apparatus for calculating configuration of optical transmission network, and optical transmission network system
US-2023198615-A1 · Jun 22, 2023 · US
Optical transmission system and data communication system
US-2023194779-A1 · Jun 22, 2023 · US
Estimating apparatus for bias drift of transmitting end modulator, compensating apparatus and receiver
US-10771230-B2 · Sep 8, 2020 · US
Apparatus and method for processing a frequency offset of a pilot and receiver
US-10623128-B2 · Apr 14, 2020 · US
Method and apparatus for estimating direct current bias of optical modulator and receiver
US-10574350-B2 · Feb 25, 2020 · US
Recent patents
Latest publications not already listed above.
Signal processing apparatus, apparatus and method for monitoring channel spacing and system
US-10491294-B2 · Nov 26, 2019 · US
Signal processing apparatus, signal transmitting apparatus and receiver
US-10439852-B2 · Oct 8, 2019 · US
Signal transmission apparatus, carrier phase recovery apparatus and method
US-10367635-B2 · Jul 30, 2019 · US
Method and apparatus for estimating direct current bias of optical modulator and receiver
US-2019222308-A1 · Jul 18, 2019 · US
Monitoring apparatus for optical signal to noise ratio, signal transmission apparatus and receiver
US-10263698-B2 · Apr 16, 2019 · US
Apparatus and method for generating transmitting sequence, training sequence synchronization apparatus and method, apparatus and method for estimating channel spacing and system
US-10243725-B2 · Mar 26, 2019 · US
Apparatus for measuring a filtering characteristic, pre-equalizer and optical communication equipment
US-10230469-B2 · Mar 12, 2019 · US
Method and apparatus for measuring a filtering characteristic, pre-equalizer and communication equipment
US-10225010-B2 · Mar 5, 2019 · US
Apparatus and method for measuring frequency response characteristics of optical transmitter and optical receiver
US-10171162-B2 · Jan 1, 2019 · US
Apparatus for measuring a filtering characteristic, pre-equalizer and communication equipment
US-10116388-B2 · Oct 30, 2018 · US
Calculating apparatus and method for nonlinear weighting coefficient
US-9998223-B2 · Jun 12, 2018 · US
Apparatus and method for estimating a frequency offset, apparatus and method for estimating a channel spacing and system
US-9985801-B2 · May 29, 2018 · US
Method and apparatus for measuring a filtering characteristic, pre-equalizer and communication equipment
US-9979471-B2 · May 22, 2018 · US
Monitoring apparatus for an optical signal to noise ratio, signal transmission apparatus and receiver
US-9882636-B2 · Jan 30, 2018 · US
Monitoring apparatus and method for an optical signal-to-noise ratio and receiver
US-9871581-B2 · Jan 16, 2018 · US
Method for estimating channel power, method for monitoring frequency spectrum characteristic, apparatus and system
US-9859977-B2 · Jan 2, 2018 · US
Apparatus and method for detecting channel spacing and system
US-9832083-B2 · Nov 28, 2017 · US
Compensation apparatus and method for inter-channel nonlinear damage
US-9825708-B2 · Nov 21, 2017 · US
Method and apparatus for correcting inter-channel power imbalance and receiver
US-9825699-B2 · Nov 21, 2017 · US
Apparatus for estimating channel spacing, apparatus for monitoring wavelength, and receiver
US-9806922-B2 · Oct 31, 2017 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Fujitsu Ltd | 53 |
| Alibaba China Co Ltd | 4 |
| Hangzhou Alicloud Feitian Information Tech Co Ltd | 3 |
| Fujitsu Ltd | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| H04B10/07955 | 16 |
| H04B10/0731 | 12 |
| H04B10/07957 | 11 |
| H04B10/616 | 11 |
| H04L25/022 | 10 |