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| 2H150 | OPTICAL FIBRES OR COATED OPTICAL FIBRES | |
| G02B6/02 -6/02,426;6/02,451-6/02,461;6/02,481-6/036,501;6/10;6/44-6/44,346 | ||
| G02B6/02-6/02@Z;6/02,361-6/02,426;6/02,451-6/02,461;6/02,481-6/036,501;6/10;6/44-6/44,346 | AA | AA00 METHOD OF MANUFACTURING OPTICAL FIBRE |
AA01 | AA02 | AA03 | AA04 | AA06 | AA07 | AA08 | AA09 | ||
| . Glass optical fibres | . . Methods of manufacturing polarisation-preserving fibres | . . . providing metal layers or members | . . . giving torsion | . . Treatment after drawing lines | . . . Atmosphere treatment | . . . . Deuterium | . . . Heat treatment (AC25 takes precedence) | |||||
| AA11 | AA13 | AA14 | AA15 | |||||||||
| . Plastic cladding | . Crystals | . . Extrusion | . . Drawing | |||||||||
| AA21 | AA22 | AA23 | AA24 | AA25 | AA26 | AA27 | AA28 | AA29 | AA30 | |||
| . Plastics | . . Polymerisation | . . . Thermopolymerisation | . . . Photopolymerisation | . . . from outside to centre | . . . from centre to outside | . . . Rotation polymerisation | . . Tube filling | . . Extrusion | . . . Multicomponent spinning | |||
| AA32 | AA33 | AA34 | AA35 | AA36 | AA37 | AA38 | AA39 | AA40 | ||||
| . . drawing lines (AF56 takes precedence) | . . Stretching | . . characterised by heating devices or temperature | . . Coating | . . forming graded index (GI) type refractive index distribution | . . . Copolymerising after diffusing monomers with each other | . . . volatilising monomers | . . . Swelling | . . . diffusing dopants or non-polymerisable low-molecular materials | ||||
| AA42 | AA43 | AA44 | AA45 | |||||||||
| . . Methods of manufacture for reducing transmission losses | . . . reducing crystallinity | . . . . Quench hardening | . . . . adding low-molecular materials | |||||||||
| AB | AB00 OPTICAL FIBRE MATERIAL |
AB01 | AB02 | AB03 | AB04 | AB05 | AB06 | AB07 | AB08 | AB09 | AB10 | |
| . Core or cladding materials | . . Glass | . . . quartz-based glasses | . . . . Pure quartz | . . . . containing germanium dioxide (GeO2) | . . . . containing titanium dioxide (TiO2) | . . . . containing aluminium oxide (Al2O3) | . . . . containing diphosphorus pentoxide (P2O5) | . . . . containing diboron trioxide (B2O3) | . . . . containing fluorine | |||
| AB14 | AB15 | AB16 | AB18 | AB20 | ||||||||
| . . . . containing transition elements (AH33 takes precedence) | . . . . containing alkali metals | . . . . containing alkaline earth metals | . . . . containing other components | . . . . containing two or more components | ||||||||
| AB23 | AB25 | AB27 | AB29 | |||||||||
| . . . Germanium- (Ge) based glasses | . . . Other oxide-based glasses | . . . Fluoride-based glasses | . . . Chalcogenide-based glasses | |||||||||
| AB32 | AB33 | AB34 | AB35 | AB36 | AB37 | AB38 | AB39 | AB40 | ||||
| . . Plastics | . . . Acrylic or methacrylic resins | . . . . substituted with fluoroalkyl groups | . . . Polystyrene resins (PS) | . . . Silicone resins | . . . Fluorocarbon resins | . . . . Copolymers of different fluorocarbon resin monomers | . . . eliminating or reducing hydrogen | . . . . substituted with deuterium | ||||
| AB43 | AB44 | AB45 | AB46 | AB47 | AB48 | AB49 | AB50 | |||||
| . . . Copolymers | . . . Polymer blends | . . . Dopants or additives (non-polymerisable low molecular materials) | . . . . Refractive index regulators | . . . . . Dopants with low refractive indices | . . . . . Aromatic compounds | . . . . characterised by polymerisation initiators | . . . . Scattering substances | |||||
| AB52 | AB53 | AB54 | AB55 | AB56 | AB57 | AB58 | AB60 | |||||
| . . Crystals | . . . containing alkali metals | . . . containing silver | . . . containing halogens | . . . containing thallium | . . . characterised by single crystals | . . . characterised by polycrystals | . . Metals | |||||
| AB61 | AB62 | AB63 | AB66 | AB70 | ||||||||
| . Stressing members | . . containing two or more components | . . containing diboron trioxide (B2O3) | . Jackets excluding pure quartz | . Numerical limitations relating to material composition ratios | ||||||||
| AC | AC00 OPTICAL FIBRE STRUCTURE 1 |
AC01 | AC02 | AC03 | AC04 | AC05 | AC06 | AC07 | AC08 | |||
| . Ends | . . Shapes of end surfaces | . . . inclined | . . . tapered or conical | . . . wedge- or pyramid-like | . . . lens-shaped curved or spherical | . . . Only core parts being protruded | . . . Smoothly treated or mirror surfaces | |||||
| AC12 | AC13 | AC14 | AC15 | AC16 | AC17 | AC18 | AC19 | AC20 | ||||
| . . changing core diameters of ends | . . changing cladding diameters of ends | . . bent | . . non-reflecting | . . having anti-reflection coatings | . . characterised by combinations with optical members | . . . Semiconductor lasers | . . . Window materials of fibre ends | . . . attaching lenses to fibre tips | ||||
| AC22 | AC23 | AC24 | AC25 | |||||||||
| . . Methods of forming ends | . . . Etching | . . . Mechanical working e.g. cutting or polishing | . . . Heating | |||||||||
| AC31 | AC32 | AC33 | AC34 | AC35 | AC37 | AC38 | ||||||
| . Structures in longitudinal directions (AG takes precedence) | . . changing core diameters (AC12 takes precedence) | . . changing cladding diameters (AC13 takes precedence) | . . changing periodically in axial directions (AG takes precedence) | . . changing refractive indices (AG takes precedence) | . . connecting a plurality of optical fibres | . . . Dispersion management of entire transmission paths | ||||||
| AC41 | AC42 | AC43 | AC44 | AC45 | AC46 | AC47 | AC48 | AC49 | AC50 | |||
| . Polarisation-preserving fibres | . . Stressing parts being elliptical | . . arranging stressing parts at side parts | . . Side tunnels | . . by core shapes | . . . elliptical | . . by asymmetric refractive indices | . . acting as polarisers | . . supporting circularly-polarised light | . . discriminating polarisation directions | |||
| AC51 | AC52 | AC53 | AC55 | AC57 | ||||||||
| . Cores or cladding being nonsolid (AF takes precedence) | . . Cores being liquids | . . Cores being gases or vacuum (AF takes precedence) | . Pivotally-supported cores | . Multiple cores | ||||||||
| AD | AD00 OPTICAL FIBRE STRUCTURE 2 |
AD01 | AD02 | AD03 | AD04 | AD05 | AD06 | AD07 | AD08 | |||
| . The number of layers including cladding | . . two | . . three | . . four | . . five | . . six | . . seven | . . eight or more | |||||
| AD11 | AD12 | AD13 | AD14 | AD15 | AD16 | AD17 | AD18 | AD19 | AD20 | |||
| . Refractive index differences with cladding | . . First layer: positive | . . First layer: 0 | . . First layer: negative | . . Second layer: positive | . . Second layer: 0 | . . Second layer: negative | . . Third layer: positive | . . Third layer: 0 | . . Third layer: negative | |||
| AD21 | AD22 | AD23 | AD24 | AD25 | AD26 | AD27 | ||||||
| . Dimensions of layers | . . Diameters or thickness of layers excluding outside diameters of cladding | . . Ratios of diameters between layers | . . Outside diameters of cladding in micrometres | . . . 120 micrometres or shorter | . . . 130 micrometres or longer and shorter than 500 micrometres | . . . 500 micrometres or longer | ||||||
| AD31 | AD32 | AD33 | AD34 | AD35 | AD36 | AD37 | AD38 | AD39 | ||||
| . Types of refractive index distribution | . . W types which have low refractive index layers between cores and cladding | . . Cylindrical cores or having recesses in centres | . . Multimode (AD36-AD39 take precedence) | . . Refractive index distribution being curvilinear or smooth | . . GI types | . . . Parameters or numerical expressions of square or alpha power distribution | . . . having imaging action | . . Pseudo GI types or multi-step types | ||||
| AE | AE00 OPTICAL FIBRE PROPERTY |
AE01 | AE02 | AE03 | AE04 | AE05 | AE06 | |||||
| . Types of dispersion controlling fibres | . . SMF for 1.3 micrometre bands or conventional types | . . Dispersion compensating fibres | . . Dispersion-shifted fibres | . . Dispersion flat fibres | . . Low-dispersion fibres or NZ-DSF | |||||||
| AE11 | AE12 | AE13 | AE14 | AE15 | AE16 | AE17 | ||||||
| . Working wavelength bands | . . O band i.e. 1260-1360 nm | . . E band i.e. 1360-1460 nm | . . S band i.e. 1460-1530 nm | . . C band i.e. 1530-1565 nm | . . L band i.e. 1565-1625 nm | . . U band i.e. 1625-1675 nm | ||||||
| AE21 | AE22 | AE23 | AE24 | AE25 | AE26 | AE27 | AE28 | AE29 | AE30 | |||
| . Numerical limitations relating to characteristics at 1.55 micrometres | . . Aeff in square micrometre or MFD in micrometres | . . . Aeff <= 20 (MFD <= 5) | . . . 20 < Aeff <= 40 (5 < MFD <= 7) | . . . 40 < Aeff <= 80 (7 < MFD <= 10) | . . . 80 < Aeff (10 < MFD) | . . Cut-off wavelength or lambda c in nm | . . . Lambda c <= 1400 | . . . 1400 < lambda c <= 1600 | . . . 1600 < lambda c | |||
| AE32 | AE33 | AE34 | AE35 | AE36 | AE37 | AE38 | AE39 | AE40 | ||||
| . . Dispersion (D) in ps/nm/km | . . . D <= -50 | . . . -50 < D <= -10 | . . . -10 < D <= -1 | . . . -1 < D <= 1 including 0 | . . . 1 < D <= 5 | . . . 5 < D <= 10 | . . . 10 < D <= 30 | . . . 30 < D | ||||
| AE42 | AE43 | AE44 | AE45 | AE46 | AE47 | AE48 | AE49 | |||||
| . . Dispersion slopes (S) in ps/nm2/km | . . . S <= -0.3 | . . . -0.3 < S <= -0.1 | . . . -0.1 < S <= -0.03 | . . . -0.03 < S <= 0.03 including 0 | . . . 0.03 < S <= 0.1 | . . . 0.1 < S <= 0.3 | . . . 0.3 < S | |||||
| AE52 | AE53 | AE54 | AE55 | AE56 | AE57 | AE58 | AE60 | |||||
| . . Zero-dispersion wavelength or lambda 0 in nm | . . . Lambda 0 <= 1260 | . . . 1260 < lambda 0 <= 1360 | . . . 1360 < lambda 0 <= 1530 | . . . 1530 < lambda 0 <= 1565 | . . . 1565 < lambda 0 <= 1625 | . . . 1625 < lambda 0 | . . Normalised frequency | |||||
| AF | AF00 PHOTONIC CRYSTAL FIBRE |
AF01 | AF02 | AF03 | AF04 | AF05 | ||||||
| . Types or wave-guiding principles | . . Holey or total reflection type | . . . Hole-added types or core materials with high refractive indices | . . Photonic band gap types | . . . Bragg fibres with PC elements being cylindrical | ||||||||
| AF11 | AF12 | AF13 | AF14 | AF15 | AF16 | AF17 | ||||||
| . Purposes additionally classified in the relevant places under viewpoint AH when necessary | . . reducing transmission losses | . . Dispersion controlling | . . . highly dispersed to positive side | . . . highly dispersed to negative side e.g. dispersion compensation | . . . Zero-dispersion wavelength | . . expanding single mode wavelength bands | ||||||
| AF21 | AF22 | AF23 | AF24 | AF25 | AF27 | AF28 | AF29 | AF30 | ||||
| . Materials additionally classified in the relevant places under viewpoint AB when necessary | . . Photonic crystal (PC) elements | . . . Holes | . . . . characterised by filled gas materials | . . . Solids or liquids | . . Cores | . . . Holes | . . . Solids or liquids | . . . . High-refractive index materials | ||||
| AF31 | AF32 | AF33 | AF34 | AF35 | AF36 | AF37 | AF38 | AF39 | AF40 | |||
| . Structures | . . The number of PC elements or holes being small e.g. 10 or less | . . with a plurality of types of PC elements or holes | . . characterised by shapes of PC elements or holes | . . . elliptical | . . . polygonal | . . characterised by arrangement of PC elements or holes | . . . without rotational symmetry of 3 times or more | . . characterised by refractive index distributions of cores | . . Changes in longitudinal directions | |||
| AF42 | AF43 | AF44 | AF46 | AF47 | ||||||||
| . . Ends | . . . sealing holes at ends | . . . characterised by coupling with optical members | . . Overcladding or jackets | . . Structures for preventing contamination | ||||||||
| AF51 | AF52 | AF53 | AF54 | AF55 | AF56 | AF57 | AF58 | AF59 | AF60 | |||
| . Methods of manufacture | . . forming holes | . . . by bundling capillaries | . . . by drilling | . . . melting materials | . . drawing lines | . . . characterised by using gases for drawing lines | . . preventing contamination | . . improving arrangement accuracy | . . Extrusion | |||
| AG | AG00 FIBRE GRATING |
AG01 | AG02 | AG03 | AG04 | AG05 | AG06 | AG07 | ||||
| . Types | . . Bragg gratings | . . Long period gratings | . . Chirp types the periods of which change along longitudinal directions | . . Apodised types the amplitudes of which change along longitudinal directions | . . Sampled types the amplitude of which periodically changes | . . Blazed types or slant or slope types | ||||||
| AG11 | AG12 | AG13 | AG14 | AG15 | AG16 | AG17 | AG18 | |||||
| . Use | . . selecting wavelengths or add drop | . . Dispersion compensating | . . Filters | . . . equalising gains | . . coupling modes | . . stabilising wavelengths of light sources or resonance structures | . . Sensors | |||||
| AG21 | AG22 | AG23 | AG24 | AG25 | AG27 | AG28 | ||||||
| . Purposes or properties | . . Temperature compensation or temperature independence | . . Polarisation independence | . . reducing side lobes | . . expanding wavelength bands to be intercepted | . . reflecting specific wavelength light | . . emitting specific wavelength light | ||||||
| AG31 | AG32 | AG33 | AG34 | AG35 | AG36 | AG37 | AG38 | AG39 | ||||
| . Structures | . . characterised by positions of gratings formed in | . . . Fibre ends | . . . Core expanded parts | . . . Fibre couplers | . . . Parts other than centre cores | . . characterised by refractive index profiles | . . changing diameters | . . connecting a plurality of gratings in series | ||||
| AG42 | AG43 | AG44 | ||||||||||
| . . Variable control | . . . by temperature e.g. heating or cooling | . . . by force or applying tensions | ||||||||||
| AG51 | AG52 | AG53 | AG54 | AG55 | AG56 | AG57 | AG58 | AG59 | AG60 | |||
| . Protecting or fixing | . . Bases | . . Seatings or fixtures | . . Packages | . . Coatings additionally classified in the relevant places under viewpoint BA-BD | . . fixing fibres while applying force to the fibres | . . Thermal expansion coefficients of protecting or fixing members | . . . positive | . . . 0 | . . . negative | |||
| AG61 | AG62 | AG63 | AG64 | AG65 | AG66 | AG67 | AG68 | AG70 | ||||
| . Methods of manufacture or manufacturing devices | . . Light irradiation through masks | . . . Phase masks | . . . Amplitude masks | . . Two-beam interference or holographic | . . Scanning with local irradiation beams | . . . Picosecond or femtosecond lasers | . . Irradiation light sources other than lasers | . . Local heating | ||||
| AG72 | AG73 | AG74 | AG76 | AG77 | AG78 | AG79 | AG80 | |||||
| . . forming gratings while being coated | . . forming gratings while applying tension | . . Monitoring | . . Pretreatment for forming gratings | . . . Hydrogenation | . . . characterised by removing coatings | . . Post-treatment of forming gratings | . . . Annealing | |||||
| AH | AH00 FUNCTION OR PURPOSE OF OPTICAL FIBRE |
AH01 | AH02 | AH03 | AH04 | AH05 | AH07 | AH08 | AH09 | |||
| . Physical or mechanical functions or purposes | . . improving heat resistance or flame resistance | . . controlling heat expansion (AG22 or AG43 takes precedence) | . . Moisture resistance or chemical resistance | . . Radiation or radiation resistance | . . improving mechanical strength | . . improving flexibility or flex resistance | . . reducing diameters | |||||
| AH11 | AH12 | AH13 | AH14 | AH15 | AH16 | AH17 | AH18 | AH19 | ||||
| . Optical functions or purposes | . . expanding effective core cross-sectional areas or Aeff | . . reducing effective core cross-sectional areas or Aeff | . . suppressing nonlinear effects | . . High nonlinearity | . . reducing polarisation mode dispersion | . . compensating dispersion slopes | . . reducing dispersion | . . flattening dispersion or reducing dispersion slopes | ||||
| AH22 | AH23 | AH24 | AH25 | AH27 | AH29 | |||||||
| . . reducing bending losses | . . widening bandwidths | . . increasing numerical apertures | . . expanding working wavelength bands | . . absorbing light or preventing stray light | . . recovering transmissivity | |||||||
| AH31 | AH32 | AH33 | AH34 | AH35 | AH36 | AH37 | AH38 | AH39 | AH40 | |||
| . Use | . . Fibres for optical amplification | . . . Rare earths-added types | . . . for Raman amplification | . . for wavelength division multiplexing (WDM) | . . for wiring or fibre to the home (FTTH) | . . Side surface light-leak types | . . for detection (AG18 takes precedence) | . . . detecting liquids | . . . detecting disconnection | |||
| AH42 | AH43 | AH44 | AH45 | AH47 | AH50 | |||||||
| . . for power transmission | . . . Cooling | . . transmitting infra-red rays | . . transmitting optical solitons | . facilitating connection with optical fibres or reducing connection losses | . Numerical limitations or numerical expressions (other F-terms take precedence) | |||||||
| BA | BA00 MANUFACTURE OF COATED OPTICAL FIBRE |
BA01 | BA02 | BA03 | BA04 | BA05 | BA06 | |||||
| . Coating methods | . . Extrusion | . . Coating | . . Vapour deposition | . . Pipe coatings | . . Recoating | |||||||
| BA11 | BA12 | BA13 | BA14 | BA15 | BA16 | BA17 | BA18 | BA19 | BA20 | |||
| . Purposes | . . Uniformising | . . Speeding up | . . suppressing stress strain | . . Screening | . . Heat treatment | . . curing resins | . . . Ultra-violet curing | . . . Heat curing | . . removing hydrogen gas | |||
| BA21 | BA22 | BA23 | BA24 | BA25 | ||||||||
| . Devices for manufacturing | . . Coating devices | . . . characterised by dies | . . . characterised by winding devices | . . Ultra-violet curing devices | ||||||||
| BA31 | BA32 | BA33 | BA34 | BA35 | BA36 | BA37 | ||||||
| . Objects to be coated | . . Glass fibres | . . Plastic cladding fibres | . . Plastic fibres | . . Crystal fibres | . . Fibre gratings | . . Fusion connecting parts | ||||||
| BB | BB00 COATING MATERIAL OF COATED OPTICAL FIBRE |
BB01 | BB02 | BB03 | BB04 | BB05 | BB06 | BB07 | BB08 | BB09 | BB10 | |
| . Materials | . . Resins | . . . Polyamides or nylon | . . . Silicone resins | . . . Epoxy resins | . . . Polyimides | . . . Acrylic or methacrylic resins | . . . Fluororesins | . . . Polyolefins | . . . . Polyethylene | |||
| BB13 | BB14 | BB15 | BB16 | BB17 | BB18 | BB19 | BB20 | |||||
| . . . Polyesters | . . . Polyurethane | . . . Vinyl resins | . . . Liquid crystal polymers | . . . Other resins | . . . Copolymers | . . . containing additives | . . . Fibre reinforced plastics (FRP) | |||||
| BB22 | BB26 | |||||||||||
| . . Glass | . . Metals | |||||||||||
| BB31 | BB32 | BB33 | BB34 | BB35 | BB36 | BB37 | BB38 | BB39 | ||||
| . Properties | . . Thermosetting | . . Photo-curing | . . Electron beam curing | . . thermoplastic | . . Liquid crystal polymers | . . Foamed layers | . . Buffer layers | . . Release layers | ||||
| BC | BC00 STRUCTURE OF COATED OPTICAL FIBRE |
BC01 | BC02 | BC03 | BC04 | BC05 | ||||||
| . Coating layer structures | . . Two layers | . . Three layers | . . Four layers | . . Five or more layers | ||||||||
| BC11 | BC12 | BC13 | BC16 | BC17 | BC18 | |||||||
| . Pipe coatings | . . having inclusions | . . having means for supporting optical fibres | . Coatings having reinforcement wires | . . longitudinally | . . embedded | |||||||
| BD | BD00 FUNCTION OR PURPOSE OF COATED OPTICAL FIBRE |
BD01 | BD02 | BD03 | BD04 | BD05 | BD06 | BD07 | BD08 | BD09 | BD10 | |
| . preventing stray light | . Discrimination | . Heat resistance or flame resistance | . Radiation resistance | . Water resistance | . Chemical resistance | . Adhesiveness or non-release properties | . characterised by surface friction | . applying stress | . relieving stress | |||
| BD11 | BD12 | BD14 | BD16 | BD17 | BD18 | BD19 | BD20 | |||||
| . reducing coating thickness or diameters | . reducing transmission losses | . used for optical fibre ribbons | . Numerical limitations | . . Young's modulus or modulus | . . Coating thickness or outside diameters of coatings | . . Thermal expansion coefficients | . . Composition ratios of coating materials |