[摘要]：A direct UV written single-mode planar Bragg grating element is demonstrated, with > 300 GHz of applied strain tuning. The degree of tuning that the fabricated device has leads to a potential application in dynamic optical networks as an optical add-drop multiplexer. The filter bandwidth is 23 +/- 5 GHz and can be tuned over a 308-GHz range by applying transverse strain across the device's composite silica-on-silicon structure. (c) 2010 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.3394001]
