Optical path coupling adhesive | Optical resin | NTT-AT NTT-AT Leading-Edge Key Technology Product Information

feature

High-precision, wide-range refractive index control (accuracy: ±0.005, range: 1.456 to 1.567 (@589nm)) is possible
Also applicable to solder reflow treatment (260°C)
High moisture resistance

Usage example

Optical adhesive used for PLC/fiber bonding

Silicon photonics application example

Adhesive for optical path coupling Application example of silicon photonics — Connection example of silicon photonics waveguide and fiber array

characteristic values

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
Refractive index adjusted product (high Tg) [Epoxy] (*2)	250～2000	30mW/ ^cm2 10 minutes	1.458～1.567	140～150	89～90	＞100	Adjust refractive index to specified value Good transparency
Refractive index adjusted product (Low Tg) [Epoxy]	200～560	10mW/ ^cm2 10min	1.458～1.567	40～50	86～90	＞100	Adjust refractive index to specified value Good transparency
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.

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Adhesive for optical path coupling