High-speed optical add-drop multiplexer based on electro-optical effect

Abstract

The invention relates to a high speed optical multiplexer based on the electro-optic effect belongs to the light apparatus used in the node of optical communication system. It includes the lithium niobate base, the lithium niobate wave-guide prepared by the titanium diffusion process, the input port, the top-loading port, the output port, the down loading port, the polarization beam analyzer, the polarization mode conversion unit and the PBC. The advantage of the invention is: (1) it can get the nanosecond tune speed; (2) in room temperature, it can get 34nm tune range under -150V-+150V voltage; The up and down bandwidth can reach 0.8nm; the first side lobe is smaller than -35dB and the inserting loss from optical fiber to optical fiber is smaller than 5dB.

Description

technical field [0001] The invention relates to an optical device used in a node of an optical communication system, in particular to a high-speed optical add / drop multiplexer. Background technique [0002] Optical add-drop multiplexer (OADM) is one of the core devices of optical wavelength division multiplexing (WDM) system, its function is to selectively download certain wavelength channels from the transmission optical path to the local, or send certain wavelength channels from the local to the transmission optical path without affecting the transmission of other wavelength channels. After the optical fiber communication network introduces OADM, it can conveniently and flexibly realize the add and drop of wavelength channels, and realize the openness and transparency of the optical network. [0003] The current OADM technology can be divided into switching type and tuning type from the perspective of realization technology of adding and dropping. [0004] The switch-typ...

AI Technical Summary

Problems solved by technology

This invention achieves good sidelobe suppression performance by using a large angle of incidence of light beams and sound beams, but because it uses acousto-optic tuning means, the tuning speed cannot break through the microsecond level

It can be seen that the tuned OADM is transparent to the wavelength and has strong scalability. It is the mainstream of commercial products at present. However, due to the limitation of tuning means, the response time cannot exceed the order of microseconds, and there is a problem of slow response speed in ultra-high-speed networks.

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