An athermal arrayed waveguide grating module and wide temperature compensation method

Abstract

Embodiments of the present invention provide an athermal arrayed waveguide grating module and a wide temperature compensation method. The athermal arrayed waveguide grating module includes: an AWG chip, the back of the AWG chip is provided with a metal electrode; a temperature adjustment control device, the temperature adjustment control device is electrically connected to the metal electrode, and is used to The resistance value of the electrode calculates the working temperature of the AWG chip, and adjusts the working temperature of the AWG chip to the target temperature or maintains it within the predetermined range of the target temperature within the preset temperature range of the industrial temperature range. The embodiments of the present invention aim at temperature regulation and control of chip-level AWG components within the preset temperature range of the industrial-grade temperature range, with lower power consumption and faster response speed, so that the control accuracy of wavelength drift can adapt to a wider temperature range, and can Meet the needs of industrial applications.

Description

technical field [0001] The embodiments of the present invention relate to the field of optical devices, in particular to an athermal arrayed waveguide grating module and a wide temperature compensation method. Background technique [0002] Arrayed Waveguide Gratings (AWG for short) is an optical device based on planar optical waveguides, consisting of an input waveguide, an input slab waveguide, an array waveguide, an output slab waveguide, and an output waveguide, wherein adjacent array waveguides have a fixed length difference. AWG is the key optical device of dense wavelength division multiplexing system, which has the advantages of high integration, large number of channels, small insertion loss, and easy batch automation production. The AWG dense wavelength division multiplexing system has high requirements on the stability of the center wavelength of the multiplexing / demultiplexing device, and the center wavelength accuracy needs to be controlled within + / -5% of the ch...

AI Technical Summary

Problems solved by technology

[0004] The wavelength accuracy of the existing chip-level athermal AWG technology is mainly reflected in the suppression of its wavelength-temperature-dependent characteristics in the commercial temperature range, such as -5 to 65°C

In the face of industrial-grade athermal AWG chips, more than one triangular groove needs to be etched, the process is difficult, and because of the chip process itself, the yield rate will be lower than the existing technology

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