Integrated Bragg waveguides as an efficient optical notch filter on silicon nitride platform
We modeled and fabricated integrated optical Bragg waveguides on a silicon nitride (Si 3 N 4) platform. These waveguides would serve as efficient notch-filters with the desired characteristics. Transmission spectra of the fabricated integrated notch filters have been measured and attenuation at the desired wavelength of 1550 nm down to-43 dB was observed. Performance of the filters has been studied depending on different parameters, such as pitch, filling factor, and height of teeth of the Bragg grating.