Evaluation and Analysis of Polarization Dependent Polymer Optical Waveguide Characteristics

We design a measurement system to evaluate polarization dependent characteristics of polymer optical waveguides fabricated by the Mosquito method to be applied to a coupler between a single-mode fiber and silicon photonics chip. We observe the dependence of birefringence in single-mode polymer waveguides on their numerical aperture.

I. Introduction

Recently, the rapid growth of cloud computing and AI services has significantly increased the demand for low power consumption of data center networks. Conventionally, pluggable optical transceivers have been mounted at the front-end of substate, where electrical wiring on the board connects them and ASIC. In order to reduce the power consumption while keep increasing transmission data rate, the electrical wiring needs to be replaced by optical wiring even near logic IC. So, co-packaged optics (CPO) which is a new packaging technique using photonic integrated circuits (PICs), is drawing significant attention [1].