Tunable light filter device based on winding micro disc

Abstract

The invention discloses a tunable optical filter based on a winding micro disc structure. The invented device comprises a partially winding micro disc resonant cavity and an optical input or output straight waveguide connected to the micro disc resonant cavity notch. The optical transmission straight waveguides are disposed respectively at the two sides of the micro disc resonant cavity bottom, and the other ends of the two optical transmission straight waveguides are connected to two waveguide reflection mirrors which are connected with each other by an orienting coupling structure or an MMI coupling structure. An electrode modulating area is disposed on the optical transmission straight waveguide or on the micro disc resonant cavity. The winding micro disc resonant cavity and the triangular waveguide mirror plane are combined organically with each other to implement wavelength quick selection. Devices such as a wave filter, an optical switch capable of selecting wavelength, a laser, a power divider and a modulator are implemented by adding electro-optic modulation or structure extension additionally. Different modulation area facilitates flexible modulation and implements different function requirement. The invented device is provided with a simple structure, a small size, and is easy to be integrated or extended.

Description

technical field [0001] The invention relates to a wire-wound microdisk device device, in particular to a tunable optical filter device based on a wire-wound microdisk. Background technique [0002] Due to the development of Dense Wavelength Division Multiplexing (DWDM) in recent years, wavelength tunable filters have become an important device for optical signal control. It is used to realize functions such as wave division multiplexing, optical add / drop, and optical signal uninterrupted monitoring. As a wavelength selective device, optical filters are playing an increasingly important role in optical communication systems. The main applications include: reflective cavity mirrors and narrowband filters for semiconductor lasers and fiber lasers, optical wavelength multiplexer / demultiplexer , Noise suppression in optical amplifiers, wavelength selectors, wavelength converters, dispersion compensators and delayers, etc. Through the combination of tunable optical filter and op...

AI Technical Summary

Problems solved by technology

Among them, the Fabry-Perot filter, the tunable filter based on mode coupling and the liquid crystal tunable filter are not fast enough to tune, and most of the fiber Bragg gratings are fixed filters, and only a few can be tuned by temperature or mechanical stretching. Accuracy and slow tuning, the design of the latter two cascaded tunable filters is complex and difficult to integrate

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