Full-automatic optical fiber coupling alignment device and optical fiber coupling alignment method

Abstract

The invention discloses a full-automatic optical fiber coupling alignment device and an optical fiber coupling alignment method. The full-automatic optical fiber coupling alignment device comprises anoptical device to be coupled into an optical fiber, and a collimating mirror, a spectroscope and a first objective lens which are sequentially arranged on the optical axis of the optical device, thecoupling end face of the optical fiber is arranged on the focus of the first objective lens; and the first objective lens is installed on a transmission light path of the spectroscope. The full-automatic optical fiber coupling alignment device and the optical fiber coupling alignment method are high in signal to noise ratio and high in efficiency.

Description

technical field [0001] The invention relates to the technical field of semiconductor product detection, in particular to a fully automatic optical fiber coupling alignment device and an optical fiber coupling alignment method. Background technique [0002] After the light is transmitted from the optical device, it needs to be collimated, shaped, and focused before being coupled into the transmission fiber. Beam focusing usually uses an optical lens to focus the laser beam to the core position of the incident end face of the fiber. Under the condition of a certain convergence angle and spot size, the beam is coupled into the transmission fiber, transmitted to the interferometer in the fiber and then tested to determine whether Meet the use requirements. Due to the small diameter of the fiber core, usually only on the order of 10 μm, the deviation of the semiconductor laser focus spot size, convergence angle and transmission direction has a greater impact on the efficiency of...

AI Technical Summary

Problems solved by technology

Traditional optical adjustments are manually adjusted, but the efficiency is low and cannot meet the needs of mass production. For high-sensitivity optical devices, the optical fiber cannot be vertically injected into the coupling end face of the light, and the signal-to-noise ratio is low and cannot meet customer requirements.

Images