Class information for:
Level 1: MICROWAVE PHOTON TECHNOL//DISTRIBUTED FEEDBACK LASERS//DISTRIBUTED BRAGG REFLECTOR LASERS

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
2154 2269 14.3 70%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 2)


ID, lev.
above		 Publications Label for level above
270 18550 SEMICONDUCTOR LASERS//IEEE JOURNAL OF QUANTUM ELECTRONICS//IEEE PHOTONICS TECHNOLOGY LETTERS

Terms with highest relevance score


Rank Term Type of term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 MICROWAVE PHOTON TECHNOL Address 38 70% 1% 32
2 DISTRIBUTED FEEDBACK LASERS Author keyword 35 27% 5% 112
3 DISTRIBUTED BRAGG REFLECTOR LASERS Author keyword 20 32% 2% 51
4 LASER TUNING Author keyword 12 20% 2% 52
5 SAMPLED GRATING Author keyword 12 54% 1% 15
6 SECOND ORDER GRATINGS Author keyword 11 78% 0% 7
7 DISTRIBUTED FEEDBACK DFB LASERS Author keyword 9 26% 1% 30
8 TUNABLE LASERS Author keyword 9 15% 2% 55
9 SAMPLED GRATING DISTRIBUTED BRAGG REFLECTOR LASER Author keyword 8 100% 0% 5
10 WAVELENGTH SELECTABLE LIGHT SOURCE Author keyword 8 100% 0% 5

Web of Science journal categories

Author Key Words


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class		 LCSH search Wikipedia search
1 DISTRIBUTED FEEDBACK LASERS 35 27% 5% 112 Search DISTRIBUTED+FEEDBACK+LASERS Search DISTRIBUTED+FEEDBACK+LASERS
2 DISTRIBUTED BRAGG REFLECTOR LASERS 20 32% 2% 51 Search DISTRIBUTED+BRAGG+REFLECTOR+LASERS Search DISTRIBUTED+BRAGG+REFLECTOR+LASERS
3 LASER TUNING 12 20% 2% 52 Search LASER+TUNING Search LASER+TUNING
4 SAMPLED GRATING 12 54% 1% 15 Search SAMPLED+GRATING Search SAMPLED+GRATING
5 SECOND ORDER GRATINGS 11 78% 0% 7 Search SECOND+ORDER+GRATINGS Search SECOND+ORDER+GRATINGS
6 DISTRIBUTED FEEDBACK DFB LASERS 9 26% 1% 30 Search DISTRIBUTED+FEEDBACK+DFB+LASERS Search DISTRIBUTED+FEEDBACK+DFB+LASERS
7 TUNABLE LASERS 9 15% 2% 55 Search TUNABLE+LASERS Search TUNABLE+LASERS
8 SAMPLED GRATING DISTRIBUTED BRAGG REFLECTOR LASER 8 100% 0% 5 Search SAMPLED+GRATING+DISTRIBUTED+BRAGG+REFLECTOR+LASER Search SAMPLED+GRATING+DISTRIBUTED+BRAGG+REFLECTOR+LASER
9 WAVELENGTH SELECTABLE LIGHT SOURCE 8 100% 0% 5 Search WAVELENGTH+SELECTABLE+LIGHT+SOURCE Search WAVELENGTH+SELECTABLE+LIGHT+SOURCE
10 GAIN COUPLING 7 44% 1% 12 Search GAIN+COUPLING Search GAIN+COUPLING

Key Words Plus


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 DFB LASERS 63 35% 6% 144
2 DISTRIBUTED FEEDBACK LASERS 38 24% 6% 139
3 SPECTRAL LINEWIDTH 34 54% 2% 44
4 TUNING RANGE 28 27% 4% 91
5 DBR LASERS 26 41% 2% 49
6 FEEDBACK SEMICONDUCTOR LASERS 24 82% 1% 14
7 DBR LASER 22 40% 2% 42
8 SHIFTED DFB LASERS 21 85% 0% 11
9 EQUIVALENT CHIRP TECHNOLOGY 15 73% 0% 11
10 COATED DFB LASERS 14 100% 0% 7

Journals

Reviews


Title Publ. year Cit. Active
references		 % act. ref.
to same field
Semiconductor lasers in photonics 2008 12 86 38%
Photonic integrated technology for multi-wavelength laser emission 2011 12 24 38%
Single-mode semiconductor lasers for long-wavelength optical fiber communications and dynamics of semiconductor lasers 2000 19 76 61%
SEMICONDUCTOR-LASERS FOR COHERENT OPTICAL FIBER COMMUNICATIONS 1990 110 75 41%
SPECTRAL CHARACTERISTICS OF DISTRIBUTED-FEEDBACK SEMICONDUCTOR-LASERS AND THEIR IMPROVEMENTS BY CORRUGATION-PITCH-MODULATED STRUCTURE 1994 22 46 63%
Review and forecast of the laser markets - Part I: Nondiode lasers 2004 1 2 100%
Tunable laser diodes for the 1250-1650 nm spectral range 2007 1 5 60%
FREQUENCY-TUNABLE SEMICONDUCTOR-LASERS 1990 11 25 76%
NARROW SPECTRAL LINEWIDTH SEMICONDUCTOR-LASERS 1992 5 41 68%
RECENT ADVANCES IN LONG-WAVELENGTH SEMICONDUCTOR-LASERS FOR OPTICAL FIBER COMMUNICATION 1991 14 98 37%

Address terms


Rank Address term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 MICROWAVE PHOTON TECHNOL 38 70% 1.4% 32
2 OPTO GRP INTERET ECON 4 75% 0.1% 3
3 TYNDALL CTVR 4 75% 0.1% 3
4 TYNDALL PHOTON GRP 3 60% 0.1% 3
5 OPTO GROUPEMENT INTERET ECON 2 67% 0.1% 2
6 OPTOELECT OPT NETWORKS GRP 2 67% 0.1% 2
7 CHEM ENGN PHYS 2 16% 0.4% 10
8 PHOTON WIRELESS DEVICES S 1 15% 0.4% 9
9 DTDCPO 1 100% 0.1% 2
10 NEC NANOELECT S 1 100% 0.1% 2

Related classes at same level (level 1)


Rank Relatedness score Related classes
1 0.0000190685 MEMBRANE LASER//DISTRIBUTED REFLECTOR DR LASER//QUANTUM NANOELECT
2 0.0000142774 OPTICAL FEEDBACK//EXTERNAL CAVITY SEMICONDUCTOR LASERS//DELO
3 0.0000111014 QUANTUM WELL LASERS//ANTI GUIDING FACTOR//MULTIQUANTUM WELL LASERS
4 0.0000101841 NEGATIVE NONLINEAR ABSORPTION EFFECT//OPTICAL INVERTER//PROD FUNDAMENTAL
5 0.0000101672 ELECTROABSORPTION MODULATORS//ELECTROABSORPTION//ELECTROABSORPTION MODULATOR
6 0.0000094663 OPT TRANSMISS COMPONENTS//TRANSMISS DEVICES RD S//EMCORE
7 0.0000086681 SOA ARRAY//OPTICAL GATE SWITCH//ANGLED FACET
8 0.0000081674 3 D SIGNAL CONSTELLATION//OPTICAL COSTAS LOOP//OPTICAL FDM
9 0.0000071620 SELECTIVE AREA GROWTH//TERTIARYBUTYLCHLORIDE//SELECTIVE EPITAXY
10 0.0000069315 MICROPHOTON PROJECT 3D//OPTICAL DIRECTIONAL COUPLERS//3D MICROPHOTON PROJECT