18 June 2002 Ion-exchanged glass DFB lasers for DWDM
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Proceedings Volume 4640, Integrated Optics: Devices, Materials, and Technologies VI; (2002) https://doi.org/10.1117/12.433203
Event: Symposium on Integrated Optoelectronic Devices, 2002, San Jose, California, United States
Abstract
Nowadays, optical telecommunication systems require an increasing bit-rate. For this reason Dense Wavelength Division Multiplexing (DWDM) systems are currently under development. They need optical sources with a narrow and stable emission spectrum in the C band which should also integrate several emission wavelengths. Glass waveguide lasers enable both the sharp linewidth of optical fiber lasers and the integration possibilities of semiconductor lasers. In this paper, the realization of ion-exchanged waveguide DFB lasers on glass substrates is presented. Phosphate Er-Yb-codoped glass integrated lasers are first investigated for different doping concentrations. The characteristics of these lasers are then compared : each one have low threshold and exhibit single mode output power of several milliwatt for 100 mW launched pump power. The effect of a passivation layer is then studied. Its modelling and experiment shows that the emitted power can be increased by reducing pump scattering losses. Thanks to the use of silver ion exchange technology, a high index increase is obtained which induces an important variation of the waveguide's effective index with its width. Thus, the emission of 15 channels roughly placed on the 100 GHz ITU grid is demonstrated.
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Sylvain Blaize, Sylvain Blaize, Lionel Bastard, Lionel Bastard, Cedric Cassagnetes, Cedric Cassagnetes, Guy Vitrant, Guy Vitrant, Jean-Emmanuel Broquin, Jean-Emmanuel Broquin, } "Ion-exchanged glass DFB lasers for DWDM", Proc. SPIE 4640, Integrated Optics: Devices, Materials, and Technologies VI, (18 June 2002); doi: 10.1117/12.433203; https://doi.org/10.1117/12.433203
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