Class information for:
Level 1: SEMICONDUCTOR OPTICAL AMPLIFIER//WAVELENGTH CONVERSION//SEMICONDUCTOR OPTICAL AMPLIFIER SOA

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
3501 1                   SEMICONDUCTOR OPTICAL AMPLIFIER//WAVELENGTH CONVERSION//SEMICONDUCTOR OPTICAL AMPLIFIER SOA 2000

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 SEMICONDUCTOR OPTICAL AMPLIFIER authKW 1957505 19% 32% 386
2 WAVELENGTH CONVERSION authKW 638264 8% 24% 166
3 SEMICONDUCTOR OPTICAL AMPLIFIER SOA authKW 452155 6% 24% 121
4 SEMICONDUCTOR OPTICAL AMPLIFIERS SOAS authKW 317088 3% 30% 67
5 OPTICAL FREQUENCY CONVERSION authKW 287892 4% 24% 76
6 CROSS GAIN MODULATION authKW 187297 2% 33% 36
7 GAIN RECOVERY authKW 175129 1% 65% 17
8 OPTICAL MIXING authKW 155610 2% 28% 35
9 IEEE PHOTONICS TECHNOLOGY LETTERS journal 155129 20% 2% 403
10 WAVELENGTH CONVERTER authKW 151803 2% 29% 33

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Optics 51789 66% 0% 1325
2 Engineering, Electrical & Electronic 27281 68% 0% 1350
3 Physics, Applied 8096 42% 0% 831
4 Telecommunications 5681 15% 0% 295
5 Physics, Multidisciplinary 8 3% 0% 56
6 COMPUTER APPLICATIONS & CYBERNETICS 4 0% 0% 1
7 Computer Science, Information Systems -0 1% 0% 13
8 Computer Science, Hardware & Architecture -1 0% 0% 4
9 Management -7 0% 0% 1
10 Engineering, General -9 0% 0% 1

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 COM 50091 2% 7% 44
2 ALCATEL TELECOM 47270 0% 100% 3
3 TECNOL TELECOMUN 47270 0% 100% 3
4 GRP INTERET SCI FOTON 35451 0% 75% 3
5 BROADBAND TELECOMMUN 33359 0% 35% 6
6 DTT CESET UNICAMP 31513 0% 100% 2
7 O TECHNOPOLE B T 31513 0% 100% 2
8 ZFZ WO 31513 0% 100% 2
9 MICROONDAS OPT 28360 0% 60% 3
10 GROUPEMENT INTERET ECON 22697 0% 21% 7

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 IEEE PHOTONICS TECHNOLOGY LETTERS 155129 20% 2% 403
2 IEEE JOURNAL OF QUANTUM ELECTRONICS 53604 9% 2% 171
3 JOURNAL OF LIGHTWAVE TECHNOLOGY 44244 9% 2% 187
4 ELECTRONICS LETTERS 39290 16% 1% 315
5 IEE PROCEEDINGS-J OPTOELECTRONICS 16047 1% 5% 22
6 IEE PROCEEDINGS-OPTOELECTRONICS 12845 1% 3% 26
7 IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS 9048 2% 1% 49
8 OPTICAL AND QUANTUM ELECTRONICS 7176 2% 1% 44
9 OPTICS COMMUNICATIONS 6691 5% 0% 107
10 FIBER AND INTEGRATED OPTICS 3145 1% 2% 13

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 SEMICONDUCTOR OPTICAL AMPLIFIER 1957505 19% 32% 386 Search SEMICONDUCTOR+OPTICAL+AMPLIFIER Search SEMICONDUCTOR+OPTICAL+AMPLIFIER
2 WAVELENGTH CONVERSION 638264 8% 24% 166 Search WAVELENGTH+CONVERSION Search WAVELENGTH+CONVERSION
3 SEMICONDUCTOR OPTICAL AMPLIFIER SOA 452155 6% 24% 121 Search SEMICONDUCTOR+OPTICAL+AMPLIFIER+SOA Search SEMICONDUCTOR+OPTICAL+AMPLIFIER+SOA
4 SEMICONDUCTOR OPTICAL AMPLIFIERS SOAS 317088 3% 30% 67 Search SEMICONDUCTOR+OPTICAL+AMPLIFIERS+SOAS Search SEMICONDUCTOR+OPTICAL+AMPLIFIERS+SOAS
5 OPTICAL FREQUENCY CONVERSION 287892 4% 24% 76 Search OPTICAL+FREQUENCY+CONVERSION Search OPTICAL+FREQUENCY+CONVERSION
6 CROSS GAIN MODULATION 187297 2% 33% 36 Search CROSS+GAIN+MODULATION Search CROSS+GAIN+MODULATION
7 GAIN RECOVERY 175129 1% 65% 17 Search GAIN+RECOVERY Search GAIN+RECOVERY
8 OPTICAL MIXING 155610 2% 28% 35 Search OPTICAL+MIXING Search OPTICAL+MIXING
9 WAVELENGTH CONVERTER 151803 2% 29% 33 Search WAVELENGTH+CONVERTER Search WAVELENGTH+CONVERTER
10 FOUR WAVE MIXING 124248 5% 8% 94 Search FOUR+WAVE+MIXING Search FOUR+WAVE+MIXING

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 1


rank cluster_id2 link
1 30689 ADAPTIVE OPTICAL SPLITTER//CARRIER INDUCED EFFECTS//INP INGAASP INP WAVEGUIDES
2 6516 SEMICONDUCTOR OPTICAL AMPLIFIER//KOLAGHAT THERMAL POWER STN//ALL OPTICAL LOGIC GATE
3 8145 OPTICAL PARAMETRIC AMPLIFIER//FIBER OPTICAL PARAMETRIC AMPLIFIER//FOUR WAVE MIXING FWM
4 5902 CLOCK RECOVERY//ALL OPTICAL CLOCK RECOVERY//NONLINEAR OPTICAL LOOP MIRROR
5 12891 OPTICAL INJECTION//INJECTION LOCKING//POLARIZATION BISTABILITY
6 6774 QUANTUM DOT LASERS//QUANTUM DOT QD//QUANTUM DOT QD LASER
7 9079 MODE LOCKED LASERS//OPTICAL PULSE GENERATION//SEMICONDUCTOR LASERS
8 7184 MODULATION FORMAT//DIFFERENTIAL PHASE SHIFT KEYING DPSK//FORMAT CONVERSION
9 21055 HOMODYNE CROSSTALK//OPTICAL CROSS CONNECT//BIDIRECTIONAL TRANSMISSION
10 2513 QUANTUM WELL LASERS//SEMICONDUCTOR LASERS//IEEE JOURNAL OF QUANTUM ELECTRONICS

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