Class information for:
Level 1: OPTICAL PHASE LOCKED LOOPS//JOURNAL OF LIGHTWAVE TECHNOLOGY//OPTICAL PHASE LOCKED LOOPS OPLLS

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
11784 1                   OPTICAL PHASE LOCKED LOOPS//JOURNAL OF LIGHTWAVE TECHNOLOGY//OPTICAL PHASE LOCKED LOOPS OPLLS 982

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 OPTICAL PHASE LOCKED LOOPS authKW 167879 2% 28% 19
2 JOURNAL OF LIGHTWAVE TECHNOLOGY journal 135814 23% 2% 229
3 OPTICAL PHASE LOCKED LOOPS OPLLS authKW 105026 1% 55% 6
4 COSTAS LOOP authKW 102688 1% 40% 8
5 PHASE ERROR VARIANCE authKW 100287 1% 63% 5
6 CURRENT CONTROLLED LASER authKW 96279 0% 100% 3
7 OPTICAL RECEIVERS authKW 87421 4% 6% 42
8 HOMODYNE DETECTION authKW 74170 2% 14% 17
9 ELECTRONICS LETTERS journal 66448 29% 1% 286
10 3 D SIGNAL CONSTELLATION authKW 64186 0% 100% 2

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Engineering, Electrical & Electronic 21672 85% 0% 835
2 Telecommunications 18472 37% 0% 362
3 Optics 14190 50% 0% 490
4 Physics, Applied 297 14% 0% 137
5 COMPUTER APPLICATIONS & CYBERNETICS 10 0% 0% 1
6 Computer Science, Information Systems 1 1% 0% 9
7 Computer Science, Hardware & Architecture -0 0% 0% 3
8 Engineering, Aerospace -0 0% 0% 2
9 Remote Sensing -0 0% 0% 1
10 Imaging Science & Photographic Technology -0 0% 0% 1

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 SKF GRP 36101 0% 38% 3
2 DEF SCI ESTAB 32093 0% 100% 1
3 ELECT COMMUN S 31 WAKAMIYA 32093 0% 100% 1
4 LTCI UNITE MIXTE RECH 5141 32093 0% 100% 1
5 MUSASHINO ELECT COMMUN 251 S 32093 0% 100% 1
6 OPTOELECT MICROWAVE DEVICES S 32093 0% 100% 1
7 PLIED ELECT RUMENTAT ENGN 32093 0% 100% 1
8 RADOPHYS ELECT 32093 0% 100% 1
9 RBC FINANCIAL GRP PROF FINANCE 32093 0% 100% 1
10 SYST ENGN COMPLEX SYST SEACS PROGRAM 32093 0% 100% 1

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 JOURNAL OF LIGHTWAVE TECHNOLOGY 135814 23% 2% 229
2 ELECTRONICS LETTERS 66448 29% 1% 286
3 IEEE PHOTONICS TECHNOLOGY LETTERS 20141 10% 1% 102
4 IEE PROCEEDINGS-J OPTOELECTRONICS 15205 2% 3% 15
5 IEEE TRANSACTIONS ON COMMUNICATIONS 5168 4% 0% 40
6 JOURNAL OF THE INSTITUTION OF ELECTRONICS AND TELECOMMUNICATION ENGINEERS 4381 0% 3% 4
7 INTERNATIONAL JOURNAL OF OPTOELECTRONICS 2893 0% 2% 4
8 FIBER AND INTEGRATED OPTICS 1858 1% 1% 7
9 ELECTRONICS AND COMMUNICATIONS IN JAPAN PART I-COMMUNICATIONS 1758 1% 1% 8
10 ELECTRONICS & COMMUNICATION ENGINEERING JOURNAL 1411 0% 1% 4

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 OPTICAL PHASE LOCKED LOOPS 167879 2% 28% 19 Search OPTICAL+PHASE+LOCKED+LOOPS Search OPTICAL+PHASE+LOCKED+LOOPS
2 OPTICAL PHASE LOCKED LOOPS OPLLS 105026 1% 55% 6 Search OPTICAL+PHASE+LOCKED+LOOPS+OPLLS Search OPTICAL+PHASE+LOCKED+LOOPS+OPLLS
3 COSTAS LOOP 102688 1% 40% 8 Search COSTAS+LOOP Search COSTAS+LOOP
4 PHASE ERROR VARIANCE 100287 1% 63% 5 Search PHASE+ERROR+VARIANCE Search PHASE+ERROR+VARIANCE
5 CURRENT CONTROLLED LASER 96279 0% 100% 3 Search CURRENT+CONTROLLED+LASER Search CURRENT+CONTROLLED+LASER
6 OPTICAL RECEIVERS 87421 4% 6% 42 Search OPTICAL+RECEIVERS Search OPTICAL+RECEIVERS
7 HOMODYNE DETECTION 74170 2% 14% 17 Search HOMODYNE+DETECTION Search HOMODYNE+DETECTION
8 3 D SIGNAL CONSTELLATION 64186 0% 100% 2 Search 3+D+SIGNAL+CONSTELLATION Search 3+D+SIGNAL+CONSTELLATION
9 OPTICAL PHASE LOCK LOOPS OPLLS 64186 0% 100% 2 Search OPTICAL+PHASE+LOCK+LOOPS+OPLLS Search OPTICAL+PHASE+LOCK+LOOPS+OPLLS
10 POLARIZATION AXIS MISMATCH 64186 0% 100% 2 Search POLARIZATION+AXIS+MISMATCH Search POLARIZATION+AXIS+MISMATCH

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 28128 DIRECTLY MODULATED LASER//COMPENSATING DEVICE//FM AM CONVERSION
2 7184 MODULATION FORMAT//DIFFERENTIAL PHASE SHIFT KEYING DPSK//FORMAT CONVERSION
3 26545 POISSON CHANNEL//DISCRETE TIME POISSON CHANNEL//DIRECT DETECTION PHOTON CHANNEL
4 1167 DISTRIBUTED FEEDBACK LASERS//MICROWAVE PHOTON TECHNOL//SEMICONDUCTOR LASERS
5 11315 SUBCARRIER MULTIPLEXING//COMMUNITY ANTENNA TELEVISION//SUBCARRIER MULTIPLEXING SCM
6 10306 FREQUENCY STABILIZATION//SATURATED ABSORPTION SPECTROSCOPY//EXTERNAL CAVITY DIODE LASER
7 18475 CROSS PHASE MODULATION//WAVELENGTH DIVISION MULTIPLEXING//FOUR WAVE MIXING
8 7799 POLARIZATION MODE DISPERSION PMD//POLARIZATION MODE DISPERSION//OPTICAL FIBER POLARIZATION
9 1032 COHERENT DETECTION//COHERENT COMMUNICATIONS//OPT NETWORKS GRP
10 3501 SEMICONDUCTOR OPTICAL AMPLIFIER//WAVELENGTH CONVERSION//SEMICONDUCTOR OPTICAL AMPLIFIER SOA

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