Thermal stability of wavelength is crucial in Dense Wavelength Division Multiplexing (DWDM) systems. Therefore there is a need to address the problem with lightwave devices such as gratings, where the central wavelength changes with temperature. Using an athermal device is one method to eliminate this problem. We are currently investigating borophosphate glasses as hosts for athermal devices as both Bg, CTE and dn/dT as a function of glass compositions will be presented. The practicality of using such athermal glasses for lightwave devices will also be presented, including the various techniques to produce waveguides in these glasses
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