Inventor · disambiguated record
Philip Nan Ji
Also filed as: JI PHILIP · JI PHILIP N · JI PHILIP NAN
95 granted patents·37 pending applications·390 citations·filing 2004–2024
99Inventor score
Top patents by PatentIndex Score
132 records- 0197US11391622B2Optical fiber sensing system with reduced spatial resolution and noise for multiple application usesNEC LAB AMERICA INC·Filed 2020·Granted Jul 19, 2022·5 cites·4 claims
- 0296US7239772B2Flexible waveband aggregator and deaggregator and hierarchical hybrid optical cross-connect systemNEC CORP·Filed 2005·Granted Jul 3, 2007·41 cites·20 claims
- 0394US10931366B2Distributed sensing over optical fiber carrying live, high-speed dataNEC LAB AMERICA INC·Filed 2020·Granted Feb 23, 2021·3 cites·6 claims
- 0493US9925570B2Open path optical sensing system having an ultrasonic cleaner and methodNEC LAB AMERICA INC·Filed 2015·Granted Mar 27, 2018·6 cites·20 claims
- 0593US8873962B2Method for traffic grooming, wavelength assignment and spectrum allocationPATEL ANKITKUMAR N·Filed 2012·Granted Oct 28, 2014·20 cites·12 claims
- 0692US9654852B2Scalable hybrid packet/circuit switching network architectureNEC LAB AMERICA INC·Filed 2014·Granted May 16, 2017·12 cites·18 claims
- 0791US12345554B2Fiber identification without cut point using distributed fiber optic sensingNEC LAB AMERICA INC·Filed 2022·Granted Jul 1, 2025·1 cites·10 claims
- 0891US11204286B2Single mode fiber distributed temperature sensing with improved noise characteristicsNEC LAB AMERICA INC·Filed 2020·Granted Dec 21, 2021·2 cites·3 claims
- 0991US9106983B2Reconfigurable branching unit for submarine optical communication networksNEC LAB AMERICA INC·Filed 2013·Granted Aug 11, 2015·13 cites·20 claims
- 1091US7978975B2Passive optical network system employing sub-carrier multiplexing and orthogonal frequency division multiple access modulation schemesNEC LAB AMERICA INC·Filed 2008·Granted Jul 12, 2011·16 cites·20 claims
- 1191US7751714B2Centralized resource management in wavelength selective switch based wavelength cross connect systemsNEC LAB AMERICA INC·Filed 2007·Granted Jul 6, 2010·28 cites·3 claims
- 1289US10345138B2Method to increase the signal to noise ratio of distributed acoustic sensing by spatial averagingNEC LAB AMERICA INC·Filed 2016·Granted Jul 9, 2019·4 cites·19 claims
- 1389US9813182B2Submarine reconfigurable optical add/drop multiplexer with passive branching unitNEC LAB AMERICA INC·Filed 2014·Granted Nov 7, 2017·8 cites·17 claims
- 1489US9124369B2Multi-direction variable optical transceiverNEC LAB AMERICA INC·Filed 2014·Granted Sep 1, 2015·10 cites·14 claims
- 1589US8781328B2Greedy channel selection procedure for the routing, wavelength assignment and spectrum allocation in the flexible optical WDM networksPATEL ANKITKUMAR·Filed 2011·Granted Jul 15, 2014·9 cites·2 claims
- 1689US8600242B2Power optimization of optical receiversJI PHILIP N·Filed 2011·Granted Dec 3, 2013·9 cites·20 claims
- 1789US8000604B2Orthogonal frequency division multiple access (OFDMA) based passive optical network (PON) architecture and its extension to long distanceNEC LAB AMERICA INC·Filed 2008·Granted Aug 16, 2011·13 cites·14 claims
- 1888US11742939B2Distributed fiber optic sensor placementNEC LAB AMERICA INC·Filed 2021·Granted Aug 29, 2023·2 cites·9 claims
- 1988US7529484B2Triplexer transceiver using parallel signal detectionNEC LAB AMERICA INC·Filed 2006·Granted May 5, 2009·13 cites·5 claims
- 2087US11132542B2Time-space de-noising for distributed sensorsNEC LAB AMERICA INC·Filed 2019·Granted Sep 28, 2021·3 cites·1 claims
- 2186US8977123B22-step-optimization procedure for routing and wavelength assignment with combined dedicated shared protections in multi-cable multi-fiber optical WDM networksPATEL ANKITKUMAR N·Filed 2012·Granted Mar 10, 2015·7 cites·6 claims
- 2286US7761012B2Optical 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 interleaverNEC LAB AMERICA INC·Filed 2007·Granted Jul 20, 2010·11 cites·2 claims
- 2385US9160477B2Virtual networking embedding procedure in an optical wavelength division multiplexing (WDM) networkNEC LAB AMERICA INC·Filed 2014·Granted Oct 13, 2015·5 cites·12 claims
- 2485US8995832B2Transponder Aggregator-based optical loopback in a MD-ROADMNEC LAB AMERICA INC·Filed 2013·Granted Mar 31, 2015·6 cites·11 claims
- 2584US9414135B2Flexible-client, flexible-line interface transponderNEC LAB AMERICA INC·Filed 2014·Granted Aug 9, 2016·6 cites·8 claims
- 2683US9571218B2Power efficient subcarrier aggregator and subcarrier combiner for multi-direction variable optical transceiverNEC LAB AMERICA INC·Filed 2014·Granted Feb 14, 2017·6 cites·13 claims
- 2783US8909043B2Routing, wavelength assignment, and spectrum allocation in wavelength convertible flexible optical wavelength-division multiplexing networksPATEL ANKITKUMAR N·Filed 2011·Granted Dec 9, 2014·7 cites·10 claims
- 2883US7973688B2Photonic filter bank for high-speed analog-to-digital conversionNEC LAB AMERICA INC·Filed 2008·Granted Jul 5, 2011·7 cites·14 claims
- 2983US7869711B2Optical tunable asymmetric interleaver and upgrade for dense wavelength division multiplexed networksNEC LAB AMERICA INC·Filed 2006·Granted Jan 11, 2011·9 cites·9 claims
- 3081US9054829B2Spectrum aware rate selection procedure for optical channels in flexible WDM networksNEC LAB AMERICA INC·Filed 2013·Granted Jun 9, 2015·5 cites·20 claims
- 3181US8611743B2Optical-layer traffic grooming in flexible optical networksJI PHILIP N·Filed 2011·Granted Dec 17, 2013·5 cites·15 claims
- 3280US11387898B2Distributed sensing over switched optical fiber networksNEC LAB AMERICA INC·Filed 2020·Granted Jul 12, 2022·1 cites·9 claims
- 3380US8879906B2Optimal combined 2R/3R regenerators placement method for line network topologies in optical WDM networksNEC LAB AMERICA INC·Filed 2012·Granted Nov 4, 2014·5 cites·10 claims
- 3479US9166723B2Network fragmentation measurement in an optical wavelength division multiplexing (WDM) networkNEC LAB AMERICA INC·Filed 2014·Granted Oct 20, 2015·3 cites·10 claims
- 3579US8260140B2WDM passive optical network with parallel signal detection for video and data deliveryLUO YUANQIU·Filed 2007·Granted Sep 4, 2012·7 cites·6 claims
- 3677US9094148B2Adaptive optical amplifier for WDM systemsNEC LAB AMERICA INC·Filed 2014·Granted Jul 28, 2015·4 cites·18 claims
- 3776US9742489B2Survivable hybrid optical/electrical data center networks using loss of light detectionNEC LAB AMERICA INC·Filed 2015·Granted Aug 22, 2017·3 cites·13 claims
- 3876US9602427B2Cloud service embedding with shared protection in software-defined flexible-grid optical transport networksNEC LAB AMERICA INC·Filed 2014·Granted Mar 21, 2017·4 cites·18 claims
- 3976US9414134B2Secure wavelength selective switch-based reconfigurable branching unit for submarine networkNEC LAB AMERICA INC·Filed 2014·Granted Aug 9, 2016·3 cites·20 claims
- 4076US9247325B2Hybrid electro-optical distributed software-defined data center architectureNEC LAB AMERICA INC·Filed 2014·Granted Jan 26, 2016·3 cites·17 claims
- 4175US9544667B2Burst switching system using optical cross-connect as switch fabricNEC LAB AMERICA INC·Filed 2014·Granted Jan 10, 2017·3 cites·20 claims
- 4275US9420359B2Dynamic wavelength virtualization and/or on-demand flow provisioning in optical networksNEC LAB AMERICA INC·Filed 2014·Granted Aug 16, 2016·3 cites·17 claims
- 4375US8725006B2Digital signal-to-signal beat noise reduction for filter-less coherent receiving systemHUANG YUE-KAI·Filed 2011·Granted May 13, 2014·4 cites·24 claims
- 4475US8090271B2Differential delay receiver using cross-polarization interferometer for PolMux-DPSK systemQIAN DAYOU·Filed 2008·Granted Jan 3, 2012·5 cites·11 claims
- 4574US9813155B2Bi-directional transmission over an elliptical core optical fiberNEC LAB AMERICA INC·Filed 2016·Granted Nov 7, 2017·2 cites·21 claims
- 4674US9654209B2Low cost secure ROADM branching unit with redundancy protectionNEC LAB AMERICA INC·Filed 2016·Granted May 16, 2017·2 cites·20 claims
- 4774US9161107B2Switching for a MIMO-OFDM based flexible rate intra-data center networkNEC LAB AMERICA INC·Filed 2014·Granted Oct 13, 2015·3 cites·20 claims
- 4873US9654246B2Low cost secure submarine ROADM branching unit using bidirectional wavelength-selective switchNEC LAB AMERICA INC·Filed 2015·Granted May 16, 2017·2 cites·10 claims
- 4972US9131289B2Software-defined optical networkNEC LAB AMERICA INC·Filed 2013·Granted Sep 8, 2015·3 cites·4 claims
- 5072US8538267B2ROADM transponder aggregator systems and methods of operationJI PHILIP N·Filed 2010·Granted Sep 17, 2013·3 cites·20 claims
Showing the top 50 of 132 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →