Fluoride glasses: channel waveguides

Another very promising fabrication process of fluoride glass channel waveguides has been investigated by Davis et al. [256], This process is based on the possibility to create photo-induced modification of the refractive index by a focused, femtosecond IR laser beam. Linear, transparent and colorless marks were formed in the inside of the glass sample translated relatively to the laser beam. Similar experiments were conducted with UV irradiation of PZG fluoride glass thin films [257]. 

H. Haquin, I. Vasilief G. Fonteneau, V. Nazabal, J.-L. Adam, S. Guy, B. Jacquier, M. Couchaud, M. Rabarot, L. Fulbert, Optical properties of Er -doped fluoride glass channel waveguides, Proc. SPIE, 5350 (23), 23-28 (2004). 

E. Lebrasseur, Y. Gao, B. Boulard, B. Jacquier, Amplification in doped PZG fluoride glass channel waveguides, ECOC Proceeding, Nice, paper 1-54, (1999). 

E. Lebrassenr, B. Jacqnier, M.C. Marco de Lucas, E. Josse, J.-L. Adam, G. Fonteneau, Y. Gao, B. Boulard, C. Jacoboni, J.E. Broquin and R. Rimet, Optical amplification and laser spectroscopy of neodymium doped fluoride glass channel waveguides, J. Alloys and Compounds, 275-277, 716-720 (1998). 

Planar and channel waveguides can be obtained by ion-exchange technique with fluoride glasses. The experiment is carried out with Er +-doped ZBLA fluoride glass samples, treated by HCl gas at a temperature below the glass transition temperature Tg (Tg = 307 °C for ZBLA). The chemical reaction at the glass surface is ... 

E. Josse, J.E. Broquin, G. Fonteneau, R. Rimet, J. Lucas, Planar and channel waveguides on fluoride glasses, J. Non-Cryst. Solids, 213-214, 152-157 (1997). 

B. Boulard, L. Brilland, H. Poignant, U.V. Writing of channel waveguides in erbimn doped fluoride glass thin films. Electron. Lett., 34(3), 267-268 (1998). 

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