Multifunctional integrated device for ASE optical fiber source

Abstract

The invention provides a multifunctional integrated device for an ASE optical fiber source and belongs to the field of optical fiber communication. According to the multifunctional integrated device, an optical fiber collimator, a wavelength division multiplexer, an optical isolator, an optical switch and filters are integrated on a semiconductor chip. 980nm pump light is collimated and coupled through the wavelength division multiplexer and enters a rare-earth-doped optical fiber, and light generated by the rare-earth-doped optical fiber is collimated and coupled through the wavelength division multiplexer, the optical isolator and the filters and enters an output optical fiber. Based on the spectral signature of the light generated by the rare-earth-doped optical fiber, the filters are selected; specifically, when the spectrum of the light generated by the rare-earth-doped optical fiber is a 1560nm Gaussian spectrum, a chirp grating is selected; when the spectrum of the light generated by the rare-earth-doped optical fiber is a 1530nm Gaussian spectrum, the relay filter is selected, and when the spectrum of the light generated by the rare-earth-doped optical fiber is a flat spectrum, the band-pass filter is selected. The angle of the wavelength division multiplexer is 3.5 degrees. The multifunctional integrated device for the ASE optical fiber source guarantees the reflection efficiency and the coupling efficiency, reduces splice loss between devices and is small in size, good in stability and convenient to use.

Description

technical field [0001] The invention belongs to the field of optical fiber communication, in particular to a multifunctional integrated device used for ASE (Amplified Spontaneous Emission, amplified spontaneous emission) optical fiber light source. Background technique [0002] LiNbO3 crystal is the most commonly used inorganic electro-optic crystal material in integrated optical devices, and its development is at a relatively mature stage. It has good electro-optic and acousto-optic effect performance, and the sound wave attenuation system is only 0.05dB / cm. Adopt Ti diffusion method and proton exchange method to make technology, can realize high-quality, high-performance LiNbO3 optical waveguide. [0003] Compared with the simple combination of discrete devices, optical integrated devices are easier to achieve miniaturization, low cost and high reliability. Integrated devices have fewer connection points than discrete devices, which can reduce splice loss accordingly. ...

AI Technical Summary

Problems solved by technology

[0004] Existing devices used for ASE fiber optic light sources include wavelength division multiplexers, optical isolators and filters, etc. These devices are discrete devices, which are inconvenient to use, and there are losses during the welding process of the pigtails of each device

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