Class information for:
Level 2: IEEE PHOTONICS TECHNOLOGY LETTERS//JOURNAL OF LIGHTWAVE TECHNOLOGY//OPTICAL FIBER COMMUNICATION

Basic class information
Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
13 4 PHYSICS, PARTICLES & FIELDS//PHYSICS, NUCLEAR//OPTICS 1062565
33 3       OPTICS//IEEE PHOTONICS TECHNOLOGY LETTERS//JOURNAL OF LIGHTWAVE TECHNOLOGY 112980
78 2             IEEE PHOTONICS TECHNOLOGY LETTERS//JOURNAL OF LIGHTWAVE TECHNOLOGY//OPTICAL FIBER COMMUNICATION 27533
1032 1                   COHERENT DETECTION//COHERENT COMMUNICATIONS//OPT NETWORKS GRP 2922
1991 1                   RADIO OVER FIBER ROF//RADIO OVER FIBER//MICROWAVE PHOTONICS 2436
2899 1                   PASSIVE OPTICAL NETWORK//PASSIVE OPTICAL NETWORK PON//DYNAMIC BANDWIDTH ALLOCATION DBA 2148
3501 1                   SEMICONDUCTOR OPTICAL AMPLIFIER//WAVELENGTH CONVERSION//SEMICONDUCTOR OPTICAL AMPLIFIER SOA 2000
3566 1                   DISPERSION MANAGEMENT//SOLITON TRANSMISSION//DISPERSION MANAGED SOLITONS 1985
5902 1                   CLOCK RECOVERY//ALL OPTICAL CLOCK RECOVERY//NONLINEAR OPTICAL LOOP MIRROR 1586
6516 1                   SEMICONDUCTOR OPTICAL AMPLIFIER//KOLAGHAT THERMAL POWER STN//ALL OPTICAL LOGIC GATE 1504
6567 1                   MICROWAVE PHOTONICS//MICROWAVE PHOTONIC FILTER//TRUE TIME DELAY 1498
7142 1                   OPTICAL PULSE SHAPING//MICROWAVE PHOTON//TEMPORAL TALBOT EFFECT 1428
7184 1                   MODULATION FORMAT//DIFFERENTIAL PHASE SHIFT KEYING DPSK//FORMAT CONVERSION 1423
7799 1                   POLARIZATION MODE DISPERSION PMD//POLARIZATION MODE DISPERSION//OPTICAL FIBER POLARIZATION 1352
8145 1                   OPTICAL PARAMETRIC AMPLIFIER//FIBER OPTICAL PARAMETRIC AMPLIFIER//FOUR WAVE MIXING FWM 1311
9285 1                   RAMAN AMPLIFIER//FIBER RAMAN AMPLIFIER//RAMAN FIBER AMPLIFIER 1201
11315 1                   SUBCARRIER MULTIPLEXING//COMMUNITY ANTENNA TELEVISION//SUBCARRIER MULTIPLEXING SCM 1018
11784 1                   OPTICAL PHASE LOCKED LOOPS//JOURNAL OF LIGHTWAVE TECHNOLOGY//OPTICAL PHASE LOCKED LOOPS OPLLS 982
18475 1                   CROSS PHASE MODULATION//WAVELENGTH DIVISION MULTIPLEXING//FOUR WAVE MIXING 574
21055 1                   HOMODYNE CROSSTALK//OPTICAL CROSS CONNECT//BIDIRECTIONAL TRANSMISSION 458
21124 1                   OPTICAL PERFORMANCE MONITORING//OPTICAL PERFORMANCE MONITORING OPM//OPTICAL SIGNAL TO NOISE RATIO OSNR 455
23048 1                   OPTOELECTRONIC OSCILLATOR//OPTOELECTRONIC OSCILLATOR OEO//MICROWAVE GENERATION 381
23365 1                   PHOTONIC SAMPLING//TIME STRETCH//OPTICAL QUANTIZATION 371
26736 1                   OPTICAL FREQUENCY COMB OFC//OPTICAL FREQUENCY COMB//RECIRCULATING FREQUENCY SHIFTER 267
28128 1                   DIRECTLY MODULATED LASER//COMPENSATING DEVICE//FM AM CONVERSION 233

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 IEEE PHOTONICS TECHNOLOGY LETTERS journal 1457657 17% 28% 4586
2 JOURNAL OF LIGHTWAVE TECHNOLOGY journal 1069011 12% 28% 3407
3 OPTICAL FIBER COMMUNICATION authKW 964290 5% 62% 1371
4 OPTICS WoSSC 873526 73% 4% 20143
5 OPTICAL COMMUNICATION authKW 812627 6% 45% 1587
6 MICROWAVE PHOTONICS authKW 706240 3% 77% 800
7 SEMICONDUCTOR OPTICAL AMPLIFIER authKW 651308 3% 69% 827
8 OPTICAL SIGNAL PROCESSING authKW 410222 2% 70% 510
9 SEMICONDUCTOR OPTICAL AMPLIFIER SOA authKW 354747 1% 78% 398
10 POLARIZATION MODE DISPERSION PMD authKW 350957 1% 92% 333

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Optics 873526 73% 4% 20143
2 Engineering, Electrical & Electronic 275249 58% 2% 16031
3 Telecommunications 187483 22% 3% 6183
4 Physics, Applied 35551 25% 1% 6888
5 Computer Science, Information Systems 1912 3% 0% 773
6 Computer Science, Hardware & Architecture 1419 2% 0% 435
7 Physics, Multidisciplinary 15 2% 0% 615
8 COMPUTER APPLICATIONS & CYBERNETICS 1 0% 0% 4
9 Physics, Mathematical -0 1% 0% 200
10 Architecture -2 0% 0% 3

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 MICROWAVE PHOTON 216568 1% 74% 258
2 OPT NETWORKS GRP 121753 0% 81% 131
3 STATE INFORMAT PHOTON OPT COMMUN 102494 1% 23% 396
4 PHOTON SYST GRP 89918 1% 52% 153
5 PHOTON 70626 3% 7% 845
6 OPT COMMUN GRP 60832 1% 37% 143
7 STATE ADV OPT COMMUN SYST NETWORKS 60416 1% 18% 293
8 PHOTON NETWORKS 55656 0% 62% 79
9 KOLAGHAT THERMAL POWER STN 44947 0% 91% 43
10 WUHAN OPTOELECT 43341 1% 10% 381

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 IEEE PHOTONICS TECHNOLOGY LETTERS 1457657 17% 28% 4586
2 JOURNAL OF LIGHTWAVE TECHNOLOGY 1069011 12% 28% 3407
3 ELECTRONICS LETTERS 231037 10% 7% 2846
4 OPTICS EXPRESS 176982 9% 7% 2360
5 OPTICAL FIBER TECHNOLOGY 146312 1% 32% 400
6 JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING 107499 1% 29% 325
7 OPTICS COMMUNICATIONS 104705 6% 6% 1569
8 OPTICS LETTERS 87795 6% 5% 1536
9 IEEE PHOTONICS JOURNAL 79560 2% 17% 413
10 FIBER AND INTEGRATED OPTICS 55752 1% 24% 203

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 OPTICAL FIBER COMMUNICATION 964290 5% 62% 1371 Search OPTICAL+FIBER+COMMUNICATION Search OPTICAL+FIBER+COMMUNICATION
2 OPTICAL COMMUNICATION 812627 6% 45% 1587 Search OPTICAL+COMMUNICATION Search OPTICAL+COMMUNICATION
3 MICROWAVE PHOTONICS 706240 3% 77% 800 Search MICROWAVE+PHOTONICS Search MICROWAVE+PHOTONICS
4 SEMICONDUCTOR OPTICAL AMPLIFIER 651308 3% 69% 827 Search SEMICONDUCTOR+OPTICAL+AMPLIFIER Search SEMICONDUCTOR+OPTICAL+AMPLIFIER
5 OPTICAL SIGNAL PROCESSING 410222 2% 70% 510 Search OPTICAL+SIGNAL+PROCESSING Search OPTICAL+SIGNAL+PROCESSING
6 SEMICONDUCTOR OPTICAL AMPLIFIER SOA 354747 1% 78% 398 Search SEMICONDUCTOR+OPTICAL+AMPLIFIER+SOA Search SEMICONDUCTOR+OPTICAL+AMPLIFIER+SOA
7 POLARIZATION MODE DISPERSION PMD 350957 1% 92% 333 Search POLARIZATION+MODE+DISPERSION+PMD Search POLARIZATION+MODE+DISPERSION+PMD
8 RADIO OVER FIBER 324122 1% 76% 371 Search RADIO+OVER+FIBER Search RADIO+OVER+FIBER
9 RADIO OVER FIBER ROF 303385 1% 87% 304 Search RADIO+OVER+FIBER+ROF Search RADIO+OVER+FIBER+ROF
10 WAVELENGTH DIVISION MULTIPLEXING 293546 3% 36% 717 Search WAVELENGTH+DIVISION+MULTIPLEXING Search WAVELENGTH+DIVISION+MULTIPLEXING

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 2


rank cluster_id2 link
1 3406 OPTICAL CODE DIVISION MULTIPLE ACCESS OCDMA//OPTICAL CODE DIVISION MULTIPLE ACCESS//OPTICAL ORTHOGONAL CODE
2 783 FIBER LASER//OPTICS//FIBER AMPLIFIER
3 1782 PHOTONIC CRYSTAL FIBER//SUPERCONTINUUM GENERATION//CONFINEMENT LOSS
4 174 SEMICONDUCTOR LASERS//IEEE JOURNAL OF QUANTUM ELECTRONICS//VERTICAL CAVITY SURFACE EMITTING LASERS
5 274 INTEGRATED OPTICS//OPTICS//JOURNAL OF LIGHTWAVE TECHNOLOGY
6 1597 NETWORK ON CHIP//OPTICAL BURST SWITCHING//OPTICAL PACKET SWITCHING
7 132 FIBER BRAGG GRATING//FIBER OPTIC SENSOR//OPTICS
8 1256 SPATIAL SOLITONS//SPATIAL OPTICAL SOLITONS//OPTICS
9 1213 OPTICS//OPTICS LETTERS//CHIRPED PULSE AMPLIFICATION
10 2018 VISIBLE LIGHT COMMUNICATION//FREE SPACE OPTICAL COMMUNICATION//VISIBLE LIGHT COMMUNICATION VLC

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