Class information for:
Level 1: FREQUENCY SHIFTED FEEDBACK//FREQUENCY SHIFTED FEEDBACK LASER//ACOUSTOOPTIC EFFECT

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
274 2             INTEGRATED OPTICS//OPTICS//JOURNAL OF LIGHTWAVE TECHNOLOGY 19226
23330 1                   FREQUENCY SHIFTED FEEDBACK//FREQUENCY SHIFTED FEEDBACK LASER//ACOUSTOOPTIC EFFECT 372

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 FREQUENCY SHIFTED FEEDBACK authKW 954529 3% 87% 13
2 FREQUENCY SHIFTED FEEDBACK LASER authKW 931940 3% 100% 11
3 ACOUSTOOPTIC EFFECT authKW 512557 3% 55% 11
4 ACOUSTOOPTIC FREQUENCY SHIFTER authKW 353006 1% 83% 5
5 PROTON EXCHANGED OPTICAL WAVEGUIDE authKW 254166 1% 100% 3
6 SHANGHAI MEASUREMENT TESTING TECHNOL address 197675 2% 33% 7
7 PHOTONIC ROUTER authKW 193647 1% 57% 4
8 ACOUSTOOPTICAL DEVICES authKW 190617 2% 38% 6
9 ACOUSTOOPTIC MODULATOR authKW 176498 1% 42% 5
10 128 DEG ROTATED Y CUT X PROPAGATION LITHIUM NIOBATE authKW 169444 1% 100% 2

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Optics 7702 59% 0% 221
2 Engineering, Electrical & Electronic 1507 38% 0% 142
3 Physics, Applied 1099 36% 0% 134
4 Telecommunications 541 11% 0% 40
5 Acoustics 46 2% 0% 9
6 Instruments & Instrumentation 1 1% 0% 5
7 Audiology & Speech-Language Pathology 0 0% 0% 1
8 Physics, Multidisciplinary -0 2% 0% 7
9 Engineering, Industrial -0 0% 0% 1
10 Engineering, Manufacturing -0 0% 0% 1

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 SHANGHAI MEASUREMENT TESTING TECHNOL 197675 2% 33% 7
2 8358 112961 1% 67% 2
3 MEASUREMENT TESTING EAST CHINA 90364 1% 27% 4
4 GERMANY MAT SCI 84722 0% 100% 1
5 HIROMASA 84722 0% 100% 1
6 MICROTECHUMR 6603 84722 0% 100% 1
7 RD OCC 84722 0% 100% 1
8 MICROPROCESSORS 84720 1% 50% 2
9 TESTING TECHNOL 84720 1% 50% 2
10 SOLID STATE OPT SCI UNIT 61609 1% 18% 4

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 JOURNAL OF LIGHTWAVE TECHNOLOGY 6530 8% 0% 31
2 OPTICS COMMUNICATIONS 5908 12% 0% 43
3 IEEE PHOTONICS TECHNOLOGY LETTERS 2455 6% 0% 22
4 IEEE JOURNAL OF QUANTUM ELECTRONICS 1916 4% 0% 14
5 ELECTRONICS LETTERS 1887 8% 0% 30
6 OPTICS LETTERS 1875 7% 0% 26
7 JAPANESE JOURNAL OF APPLIED PHYSICS 1464 5% 0% 17
8 FUJITSU SCIENTIFIC & TECHNICAL JOURNAL 1060 1% 0% 3
9 JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS 857 5% 0% 18
10 RUSSIAN ULTRASONICS 524 0% 1% 1

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 FREQUENCY SHIFTED FEEDBACK 954529 3% 87% 13 Search FREQUENCY+SHIFTED+FEEDBACK Search FREQUENCY+SHIFTED+FEEDBACK
2 FREQUENCY SHIFTED FEEDBACK LASER 931940 3% 100% 11 Search FREQUENCY+SHIFTED+FEEDBACK+LASER Search FREQUENCY+SHIFTED+FEEDBACK+LASER
3 ACOUSTOOPTIC EFFECT 512557 3% 55% 11 Search ACOUSTOOPTIC+EFFECT Search ACOUSTOOPTIC+EFFECT
4 ACOUSTOOPTIC FREQUENCY SHIFTER 353006 1% 83% 5 Search ACOUSTOOPTIC+FREQUENCY+SHIFTER Search ACOUSTOOPTIC+FREQUENCY+SHIFTER
5 PROTON EXCHANGED OPTICAL WAVEGUIDE 254166 1% 100% 3 Search PROTON+EXCHANGED+OPTICAL+WAVEGUIDE Search PROTON+EXCHANGED+OPTICAL+WAVEGUIDE
6 PHOTONIC ROUTER 193647 1% 57% 4 Search PHOTONIC+ROUTER Search PHOTONIC+ROUTER
7 ACOUSTOOPTICAL DEVICES 190617 2% 38% 6 Search ACOUSTOOPTICAL+DEVICES Search ACOUSTOOPTICAL+DEVICES
8 ACOUSTOOPTIC MODULATOR 176498 1% 42% 5 Search ACOUSTOOPTIC+MODULATOR Search ACOUSTOOPTIC+MODULATOR
9 128 DEG ROTATED Y CUT X PROPAGATION LITHIUM NIOBATE 169444 1% 100% 2 Search 128+DEG+ROTATED+Y+CUT+X+PROPAGATION+LITHIUM+NIOBATE Search 128+DEG+ROTATED+Y+CUT+X+PROPAGATION+LITHIUM+NIOBATE
10 ACOUSTOOPTIC SWITCH 169444 1% 100% 2 Search ACOUSTOOPTIC+SWITCH Search ACOUSTOOPTIC+SWITCH

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 23020 ACOUSTOOPTIC DEVICES//ACOUSTOOPTIC MODE COUPLING//FLEXURAL ACOUSTIC WAVE
2 23184 BIREFRINGENT FILTERS//FIBER FABRY PEROT ETALON//CHRISTIANSEN EFFECT
3 17892 WAVELENGTH SELECTIVE COUPLING//MICROPHOTON PROJECT 3D//3D MICROPHOTON PROJECT
4 33560 STRAIN INDUCED OPTICAL WAVEGUIDE//DIEE INFM//FOURIER TRANSFORM FT METHOD
5 12905 ACOUSTO OPTIC TUNABLE FILTER//ACOUSTO OPTICS//ACOUSTOOPT
6 9072 NEW TECHNOL S//LINBO3 OPTICAL MODULATOR//OPTICAL MODULATOR
7 15343 RECEIVER COLLISION//LIGHTWAVE NETWORKS//AVERAGE REJECTION PROBABILITY
8 29826 PIEZOOPTIC EFFECT//UKRAINIAN JOURNAL OF PHYSICAL OPTICS//INDICATIVE SURFACES
9 35199 COMPRESSED GAS CAPACITORS//EQUIVALENT CIRCUIT OF MARX GENERATOR//GERMAN STAND
10 21055 HOMODYNE CROSSTALK//OPTICAL CROSS CONNECT//BIDIRECTIONAL TRANSMISSION

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