Optical Adhesives

The adhesive technology used in optical communication is one of the key technologies we offer. In order to produce low-cost and highly reliable optical components, an easy-to-use, durable adhesive is necessary. Requirements for an optical adhesive vary depending on where the adhesive is applied. We develop and market adhesives and adhesive resins to meet the customer's specific needs for refractive index adjustment, precise fixing, heat-resistance with high elasticity, low moisture permeability and others.

Example of applying adhesives to optical waveguide components

UV-curable adhesives (one-component epoxy type)

Precision adhesive	Standard type AT4291A	Low shrinkage during curing and low thermal expansion coefficient with excellent transparency.
	Transparent type AT9290F	Large curing depth. Low shrinkage during curing (1 - 2%) and low thermal expansion coefficient.
Heat-resisting adhesive	AT3925M	Provides a glass-transition temperature of more than 200°C. Hard and transparent
Optical adhesive for connecting optical waveguide	Adjustable refractive index	Refractive index can be adjusted to the value specified by the customer providing excellent transparency.
Adhesive for assembly of arrays	AT9390	Allows machine-abrasion. Highly durable.
Adhesive for fixing fibers	AT9575M	Highly durable. Non-fluid

UV-curable adhesives (one-component acrylate type)

Highly moisture-resistant optical adhesive for light path connection	AT6001	Moisture resistance levels comply with Teclordia testing standards. Provides excellent transparency and flexibility (Tg is as low as -3°C).
	AT8224	Moisture resistance levels comply with Teclordia testing standards. Excellent transparency. Tg = approx. 100°C.
Adhesive for optical component assembly	AT6177	High viscosity. Tg = approx. 100°C. Excellent transparency. nD = 1.51.
Adhesive for fixing fibers	AT8105	Highly durable. Non-fluid

UV-curable resins (one-component epoxy type, acrylate type)

Light guide forming resin	Refractive index adjustable	nD = 1.43 to 1.62 (epoxy type), 1.42 to 1.70 (acrylic type). Viscosity adjustable (easy control of spin coat thickness)

Room temperature curing type sealants (two-component epoxy type)

Sealant for optical components	S3903, S3903-5, OS-39	Flexible moisture-proof sealant. Paste format.
	14SI, 14SI-3, OS-14	Highly moisture-proof sealant. Paste format. Strong bonding strength.

Made-to-order ultraviolet curing type / heat curing type adhesives / resins and room temperature curing type sealants

Resins, adhesives, sealants	Characteristics such as viscosity, Tg, and curing type are adjustable.

Others

• Customize UV curable adhesives, viscosity and Tg adjustable.
• Heat curing type adhesives