Manufacturing method for phosphate glass optical waveguide

Abstract

A preparing process of optical waveguide of phosphate glass, containing two steps. First, melting phosphate glass with erbium. Second, preparing optical waveguide using the glass by the way of ion exchange. The chemistry proerty of it is stability. It contains good surface optical quality in the process of ion exchange. Surface of optical waveguide refractive index delta n is 0.005-0.04. Transmit loss of wave-guide is under 1dB / cm. Waveguide laser and orthoron made from the glass is valuable of application in the field of telecommunication.

Description

technical field [0001] The invention relates to phosphate glass, in particular to a method for making a phosphate glass optical waveguide. Background technique [0002] Erbium atoms provide gain over the 1550nm optical communication window. In order to meet the demand for high integration, high performance and low price devices in the "metropolitan area network" market, optical communication devices are developing in the direction of miniaturization and integration. The optical waveguide structure can confine the pump light energy in a region with a very small cross-sectional area and a long length, thereby increasing the pump light power density and effective length of action, and obtaining a very high laser gain per unit length, which is about 100 times that of the fiber structure. times. Compared with erbium-doped fiber amplifiers, erbium-doped glass waveguide amplifiers have the characteristics of low manufacturing cost, high gain per unit length, compact structure, sm...

AI Technical Summary

Problems solved by technology

However, the poor chemical stability of phosphate glass limits its application in waveguide fabrication.