New paper published in IEEE Photonics Technology Letters

Our latest paper entitled Grating Coupler Design for Reduced Back-Reflections just got published in IEEE Photonics Technology Letters.

This work was led by my colleague Jeong Hwan Song and it illustrates how efficient grating couplers with low back reflections can be made in our silicon nitride waveguide platform. In many photonic applications, back-reflections from the grating couplers can result in undesired interferences in the components that are being tested. By designing asymmetric grating couplers, these back reflections can be suppressed by over 5 dB with almost no impact on the coupling efficiency.