A low-loss ultra-broadband thermo-optic switch

Abstract

The invention discloses a low-loss ultra-wideband thermooptic switch. A first input waveguide and a second input waveguide are respectively connected with a first connecting waveguide and a second connecting waveguide through a first power averaging coupler; the first connecting waveguide and the second connecting waveguide are respectively connected with a first output waveguide and a second output waveguide through a second power averaging coupler; a first heating electrode and a second heating electrode which are used for heating the waveguides are arranged above the first connecting waveguide and the second connecting waveguide respectively; the second power averaging coupler and the first power averaging coupler are arranged in a rotary symmetrical manner; the first power averaging coupler is the same as the second power averaging coupler in distribution structure after being rotated. The low-loss ultra-wideband thermooptic switch has the advantages of being small in size, low in loss and high in bandwidth.

Description

technical field [0001] The invention relates to a planar optical waveguide integrated device, in particular to a low-loss ultra-broadband thermo-optic switch. Background technique [0002] Optical communication has achieved great success in the field of long-distance communication. With the development of optical communication technology, people's demand for communication capacity is also increasing. This also puts forward higher requirements on the optical network structure. It is particularly important to be able to switch and even route optical signals flexibly and intelligently according to the specific conditions in the current network. Specifically, on each optical network node, an optical control module such as an optical cross-connector, an optical add-on / drop-out device, etc. becomes the basis of everything. As the most basic device unit for controlling optical signals, the optical switch is the most important. Often an optical control module contains dozens or ...

AI Technical Summary

Problems solved by technology

The disadvantage is that the size of the device is longer, and more variables need to be controlled, making it more difficult to manufacture

Another solution is to use an asymmetric directional coupler (ADC) structure, through the design of the asymmetric waveguide width and the introduction of the phase control region to achieve a larger operating bandwidth, the disadvantage is that its performance is very sensitive to the waveguide width of the coupling region, and The design is not flexible enough

Images