Adjustable 2*2 light splitter

Abstract

The invention discloses an adjustable 2*2 light splitter which comprises a substrate, wherein an input waveguide unit, a coupling waveguide unit and an output waveguide unit are arranged on the substrate; the input waveguide unit is connected with the output waveguide unit through the coupling waveguide unit; and the coupling waveguide unit comprises a coupling waveguide component, a thermal modulation component and a thermal insulating component. The light splitter has the beneficial effects that firstly, adjustment of any light splitting ratio can be achieved; secondly, only a primary orientated coupler structure is provided, so that the light splitter is low in consumption, compact in size and easy in integration with other devices; and thirdly, adjustment of different voltages can be achieved through the thermal modulation component, and adjustment on light splitting ratios of different wavelengths is achieved.

Description

technical field [0001] The invention belongs to the technical field of fiber-to-the-home passive optical networks, and in particular relates to an adjustable 2×2 optical splitter used for fiber-to-the-home user distribution. Background technique [0002] With the rapid development of 4k video, AR / VR technology, Internet+, big data, cloud services and other services, broadband networks are developing in the direction of ultra-bandwidth, intelligence, and multi-services, which greatly stimulates the increase in bandwidth capacity of transmission networks and vigorously promotes Development of fiber-to-the-home. In the fiber-to-the-home passive optical network, a large number of splitters are required for optical path allocation, and in some special scenarios, adjustable optical splitters are required to achieve dynamic and flexible optical path allocation. Existing adjustable optical splitters generally adopt the form of electro-optic, acousto-optic or thermo-optic multi-mode...

AI Technical Summary

Problems solved by technology

[0003] The invention proposes an adjustable 2×2 optical splitter which is compact in structure, easy to integrate, and can be adjusted in any light division ratio of different wavelengths in view of the existing adjustable splitter with complex adjustment, large size and complex process.

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