Multifunctional integrated optical device

Abstract

The invention discloses a multifunctional integrated optical device. The integrated optical device comprises a first optical fiber collimator, a first beam splitter, a first optical rotation piece, a second beam splitter, a magneto-optical crystal, an optical rotation piece combination, a third beam splitter, a WDM light splitting piece and a second optical fiber collimator in the light propagation direction. Each of the first beam splitter and the third beam splitter comprises two polarization films which are parallel to each other; the first optical rotation sheet is arranged at a light outlet of one polarization film of the first beam splitter; the optical rotation piece combination comprises a second optical rotation piece and a third optical rotation piece which are arranged in parallel; an included angle between the WDM beam splitter and incident light is less than 90 degrees; the integrated optical device further comprises a third optical fiber collimator and an optical filter which are arranged on the same axis. The third optical fiber collimator, the optical filter and the second collimator are arranged on the same side of the WDM beam splitter. According to the embodiment of the invention, the optical isolator and the WDM device are integrated, the size is small, the cost is low, the reliability is high, and the optical isolator can be widely applied to the field of optical devices.

Description

technical field [0001] The invention relates to the field of optical devices, in particular to a multifunctional integrated optical device. Background technique [0002] The high-power laser system is very sensitive to abnormal incoming light. If the light returning to the high-power laser system is strong, it will affect the stable operation of the high-power laser system, and even more serious damage to the entire laser system. An optical isolator is added in the middle, so that the light can only pass in the forward direction, and the reverse return light is filtered out. WDM (Wavelength Division Multiplexing, wavelength division multiplexing) is a technology that uses multiple lasers to send multiple laser beams of different wavelengths on a single fiber at the same time. Each signal is transmitted in its unique color band after data modulation. WDM can make Existing fiber optic infrastructure has significantly increased capacity. However, the current optical devices u...

AI Technical Summary

Problems solved by technology

However, independent WDMs and isolators are used in current optical devices, which have the problems of large volume, many fiber fusion points, low reliability and high cost.

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