NTT AT Optical adhesive
Optical path bonding adhesive
- Refractive index 1.45~1.56@nD, controllable with accuracy of ±0.005
- Alignment is easy because it is a UV curing type.
- High durability with little decrease in adhesive strength due to heat, humidity, etc.
Fiber array assembly adhesive
- excellent durability
- Easy-to-work viscosity
Precision fixing adhesive
- Adhesive fixation on the order of submicrons is possible because there is very little change in fixing position due to curing or temperature changes.
- AT9290F becomes transparent after curing
Sealant for optical components
- Less internal stress during curing and heat cycle
- Low moisture permeability even at high temperatures
Optical path bonding adhesive Usage example
Optical adhesive used for PLC/fiber bonding
Silicon photonics application example
| model number [Main component] | viscosity (mPa・s) | Curing conditions [irradiation intensity, time] | refractive index (*1) | Glass-transition temperature Tg (°C) | Light transmittance % [1.3um] | Adhesion strength (kgf/ cm2) | Features |
|---|---|---|---|---|---|---|---|
| GA700H (high Tg) [Epoxy] (*2) | 280 | 30mW/ cm2 for 10min | 1.458 | 145 | 91 | ＞247 | Matches the refractive index of quartz glass at λ1.55um |
| GA700L (Low Tg) [Epoxy] | 250 | 10mW/ cm2 10min | 1.456 | 46 | 94 | ＞154 | Matches the refractive index of quartz glass at λ1.55um |
| AT6001 [Acrylate] | 470 | 10mW/ cm2 10min | 1.505 | 0 | 91 | ＞99 | Compliant with telecodia standards (high temperature and high humidity), flexibility |
| AT8224 [Acrylate] | 145 | 10mW/ cm2 10min | 1.505 | 115 | 89 | ＞209 | Compatible with Telecodia standard (high temperature and high humidity), high Tg |
*1...Sodium D line after curing
*2...This product contains "Non-medicinal deleterious substances" (Please refer to SDS (MSDS) for handling)
The characteristic values in the table are sample measurement values, not guaranteed values.
Fiber array assembly adhesive Usage example
*For fixing fiber V-grooves...Applicable location A, for fixing fiber roots...Applicable location B
| Model number [Main component] | Applicable locations | Hardening conditions [irradiation intensity, time] | Viscosity (mPa·s) | Glass transition temperature Tg (°C) | Hardness Shore D | Adhesive strength (kgf/ cm² ) | Features |
|---|---|---|---|---|---|---|---|
| AT3925M [Epoxy] (*1) | A | 100mW/cm2 10min | 200 | 219 | 88 | >99 | High elasticity and high heat resistance |
| AT9390 [Epoxy] (*1) | A | 30mW/cm2 10min | 600 | 131 | 81 | >194 | High moisture resistance |
| AT9968 [Epoxy] (*1) | A | 100mW/cm2 10min | 70 | 181 | 85 | >143 | low viscosity |
| AT9575M [Epoxy] | B | 100mW/cm2 10min | paste | 42 | 35 | >221 | High durability, |
| AT8105 [Acrylate] | B | 10mW/cm2 5min | paste | 103 | 78 | >226 | High durability, non-flowability, high Tg |
*1...This product contains a "highly toxic substance not for medical use" (please refer to the SDS (MSDS) for handling instructions).
The characteristic values in the table are sample measurements and are not guaranteed values.
Precision fixing adhesive Usage example
| model number [main component] | viscosity (mPa・S) | Curing conditions [Irradiation intensity, time] | cure shrinkage (%) | Glass-transition temperature Tg (°C) | coefficient of thermal expansion (ppm/°C) | Adhesion strength (kgf/ cm2) | Characteristic |
|---|---|---|---|---|---|---|---|
| AT4291A [Epoxy] (*1) | 25,000 | 100mW/ cm2 10 minutes | 2 | 206 | 23 | >116 | low viscosity |
| AT9290F [Epoxy] (*1) | 45,000 | 100mW/ cm2 10 minutes | 1 | 140 | 31 | >200 | Transparent after curing (Large curing depth) |
| AT3862P [Epoxy] (*1) | 180,000 | 100mW/ cm2 10 minutes | 0.5 | 195 | 20 | >210 | Small cure shrinkage high viscosity |
| AT3916P [Epoxy] (*1) | 36,000 | 100mW/ cm2 10 minutes | 0.9 | 233 | 18 | >220 | low viscosity |
Sealant for optical components Usage example
| model number [Main component] | Curing conditions | Appearance (color) | Mixing ratio *1 | pot Life (min) | moisture permeability coefficient * 2 | Hardness *3 | adhesion | Feature |
|---|---|---|---|---|---|---|---|---|
| OS5958 [A: Epoxy resin] [B: Amine curing agent] | room temperature 24 hours or 80°C 1 hour | A: White paste B: Yellow transparent liquid | 10/3 | 120 | 1.6×10-8 | 47 | 131 | high moisture resistance, Pot life length |
| OS5962 [A: Epoxy resin] [B: Amine curing agent] | A: White paste B: Yellow transparent liquid | 21/3 | 120 | 0.7×10-8 | 66 | 146 | high moisture resistance, high viscosity, Pot life length | |
| OS5980 [A: amine] [B: modified epoxy] | 80°C for 1 hour | A: Transparent paste B: Black paste | 1/2 | 120 | 3×10-7 | 20 | 24 | high flexibility |
*1...weight ratio
*2...Unit of moisture permeability coefficient (cc･cm/cmHg･cm 2 ･s), measurement condition 85℃ 85%RH
*3...Shore D
*4...Shear bond strength against SUS (kgf/cm 2)
The characteristic values in the table are sample measurement values, not guaranteed values.