Philip Nan Ji
95Patents
7h-index
51Co-inventors
75Inventor score
Filing activity: Mar 26, 2004 → Oct 5, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7239772B2 | Flexible waveband aggregator and deaggregator and hierarchical hybrid optical cross-connect system | Electricity | 27 | Expired |
| US7751714B2 | Centralized resource management in wavelength selective switch based wavelength cross connect systems | Electricity | 19 | Active |
| US8873962B2 | Method for traffic grooming, wavelength assignment and spectrum allocation | Electricity | 13 | Active |
| US7529484B2 | Triplexer transceiver using parallel signal detection | Electricity | 10 | Active |
| US9654852B2 | Scalable hybrid packet/circuit switching network architecture | Electricity | 9 | Active |
| US8600242B2 | Power optimization of optical receivers | Electricity | 8 | Active |
| US9106983B2 | Reconfigurable branching unit for submarine optical communication networks | Electricity | 7 | Active |
| US9124369B2 | Multi-direction variable optical transceiver | Electricity | 7 | Active |
| US7978975B2 | Passive optical network system employing sub-carrier multiplexing and orthogonal frequency division multiple access modulation schemes | Electricity | 7 | Active |
| US8000604B2 | Orthogonal frequency division multiple access (OFDMA) based passive optical network (PON) architecture and its extension to long distance | Electricity | 7 | Active |
| US7973688B2 | Photonic filter bank for high-speed analog-to-digital conversion | Physics | 6 | Active |
| US7761012B2 | Optical communication system and method for generating dark return-to zero and DWDM optical MM-Wave generation for ROF downstream link using optical phase modulator and optical interleaver | Electricity | 6 | Active |
| US9414135B2 | Flexible-client, flexible-line interface transponder | Electricity | 5 | Active |
| US9813182B2 | Submarine reconfigurable optical add/drop multiplexer with passive branching unit | Electricity | 5 | Active |
| US7099529B2 | Flexible band tunable filter | Physics | 5 | Expired |
| US8781328B2 | Greedy channel selection procedure for the routing, wavelength assignment and spectrum allocation in the flexible optical WDM networks | Electricity | 5 | Active |
| US7869711B2 | Optical tunable asymmetric interleaver and upgrade for dense wavelength division multiplexed networks | Electricity | 5 | Active |
| US8879906B2 | Optimal combined 2R/3R regenerators placement method for line network topologies in optical WDM networks | Electricity | 4 | Active |
| US8977123B2 | 2-step-optimization procedure for routing and wavelength assignment with combined dedicated shared protections in multi-cable multi-fiber optical WDM networks | Electricity | 4 | Active |
| US8260140B2 | WDM passive optical network with parallel signal detection for video and data delivery | Electricity | 4 | Active |
| US8611743B2 | Optical-layer traffic grooming in flexible optical networks | Electricity | 4 | Active |
| US8995832B2 | Transponder Aggregator-based optical loopback in a MD-ROADM | Electricity | 4 | Active |
| US9571218B2 | Power efficient subcarrier aggregator and subcarrier combiner for multi-direction variable optical transceiver | Electricity | 3 | Active |
| US9602427B2 | Cloud service embedding with shared protection in software-defined flexible-grid optical transport networks | Electricity | 3 | Active |
| US9094148B2 | Adaptive optical amplifier for WDM systems | Electricity | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.