Arrayed waveguide grating with adjustable wavelength and bandwidth and adjustment method of arrayed waveguide grating

Abstract

The invention relates to the technical field of optical communication, in particular to an arrayed waveguide grating with adjustable wavelength and bandwidth and an adjustment method of the arrayed waveguide grating. The arrayed waveguide grating comprises an input waveguide area, a first slab waveguide area, an arrayed waveguide area, a second slab waveguide area and an output waveguide area which are connected in sequence; after an optical signal enters from an input waveguide and is transmitted to a first slab waveguide, the optical signal is transmitted into multiple waveguides of the arrayed waveguide area, is then transmitted to a second slab waveguide for diffraction and interference, and is finally output from multiple output waveguides respectively; each waveguide of the arrayed waveguide area is provided with a heating electrode for changing the temperature of the corresponding waveguide, and then changing an effective refractive index of the corresponding waveguide, so thatthe wavelength and bandwidth of the output of the arrayed waveguide grating are changed. The arrayed waveguide grating is adjustable in both wavelength and bandwidth through the arrangement of the heating electrodes, is simple in structure, is easy to control, and can meet the usage requirement of a DWDM system.

Description

【Technical field】 [0001] The invention relates to the technical field of optical communication, in particular to an arrayed waveguide grating with adjustable wavelength and bandwidth and an adjustment method thereof. 【Background technique】 [0002] Dense Wavelength Division Multiplexing (DWDM for short) system is a relatively common optical layer networking system at present, which realizes multiple signal transmission through multiplexing and demultiplexing. Arrayed Wavelength Grating (AWG) based on Planar Lightwave Circuit (PLC) technology is an important multiplexing / demultiplexing device in DWDM systems. A silicon dioxide film is deposited on the circle, and then the AWG is fabricated by photolithography and reactive ion etching. Compared with Fiber Bragg Grating (abbreviated as FBG) and thin film filter (Thin Film Filter, abbreviated as TFF), AWG has high integration, large number of wavelength channels, small channel interval, no need to use optical isolator, Easy to...

AI Technical Summary

Problems solved by technology

The traditional DWDM system usually has a fixed bandwidth, and its networking flexibility and dynamic allocation capabilities are increasingly unable to meet the needs of market communication services.

Images