A Single Lens Coupling Method Applied to Laser Devices

Abstract

The invention relates to a single lens coupling method applied to a laser device. The laser device comprises an output chip component and a laser chip component, wherein the output chip component comprises an output chip substrate and an output chip, the laser chip component comprises a laser chip substrate, a laser chip and a lens, the single lens coupling method comprises the following steps: S1, providing one or more laser device, attaching the output chip to the output chip substrate, attaching the laser chip to the laser chip substrate, and then attaching the lens to the laser chip substrate; and S2, coupling the output chip component with the laser chip component, and then connecting a fixed output chip component with the laser chip component through glue solidification. The single lens coupling method can improve tolerance in the coupling process, reduce time consumed by the process and accuracy / stability requirement on a coupled machine table so as to lower cost, and can further effectively improve the drifting phenomenon of optical output power, thereby improving coupling tolerance and product yield.

Description

technical field [0001] The invention relates to a single lens coupling method applied to a laser device. Background technique [0002] Common laser emitting devices currently on the market include single-channel laser devices and multi-channel laser devices. [0003] In single-channel laser devices, the laser chip is generally coupled with FA (FiberArray, fiber array). In multi-channel laser devices, the laser chip is generally coupled with TFF (Thin Film Filter, dielectric film filter) chip components or AWG (ArrayWaveguide Grating, array waveguide grating) chip components for coupling. Coupling methods include direct coupling, single-lens coupling, double-lens coupling, etc. [0004] The coupling loss of the direct coupling method is large, and it is difficult to apply to devices that require output power; the dual-lens coupling method can achieve high coupling efficiency, but the dual-lens process brings a large increase in material costs and process costs, and product ...

AI Technical Summary

Problems solved by technology

In the process of coupling the lens, the optical coupling efficiency and the lens position are extremely sensitive, so a very high position accuracy and a stable coupling device are required to search for the ideal power value. At the same time, during the curing process of the lens 2, due to the shrinkage effect of the glue , the lens 2 will move in a direction perpendicular to the direction of light transmission, which will easily cause optical power drift, and the yield rate is not high

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