Preparation And Characterization Of Erbium-bismuth Co-doped Borate Glass

The future development of communication technology will be miniaturized,integrated all-optical communication, which put forward higher requirements forperformance and miniaturization of communication devices, necessitated thedevelopment of integrated optics. The transmission loss is a main problem in theoptical communication system. The erbium-doped waveguide amplifier (EDWA) hasthe role of the amplified light signal to compensate for transmission loss, and itsoperating wavelength is located a minimum loss window of optical fibercommunication1530nm band, so it has become a hot topic of research at home andabroad.The content of this thesis is to produce an erbium-bismuth co-doped borate glasswith the oxide high-temperature melting method. It prepares for preparation oferbium-bismuth co-doped waveguide amplifier on this glass substrate by ion exchangein the next step. In this dissertation, we mainly researched on the following parts:Firstly, this dissertation introduces the basic content of the integrated optical andreviews the history of the development of the erbium-doped waveguide amplifiers andrecent progress.Secondly, this dissertation introduces the optical waveguide,theerbium-doped waveguide amplifiers and the production process of optical glass indetail.Thirdly, this dissertation describes the design of the erbium-bismuth co-dopedborate glass, which includes selection of materials, calculation of material quality,determine the mixed sequence and calculation of several parameters.In addition,this dissertation describes the experimental procedures in detail.Finally, we measurethe absorption and photoluminescence spectra of the erbium-bismuth co-doped borateglass. And we use J-O theory calculate the intensity parameterΩ λ, the spectralintensity of the electric dipole transition, the probability of spontaneous emission transition and the absorption cross section. We also use McCumber theory calculate theemission parameters, the full width at half maximum (FWHM) and the emission crosssection. Compared with other glass hostes, we observe that this erbium-bismuthco-doped borate glass has the largerS edand σ es×FWHMvalue. It is obvious thatthis erbium-bismuth co-doped borate glass is better than other glasses as a hostmaterial for erbium-doped broadband amplifier.