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Taper Matrix Based Edge Coupler for Standard Single Mode Fiber

Summary

Researchers at Purdue University have developed a multilayer format edge coupler for SMF-28® fiber where mode is coupled to silicon via an intermediate layer as a stepping stone. This intermediate layer requires less taper length for the coupling performance, making application more efficient with this layer. In addition, a silicon nitride tip array or matrix can be deployed at the facet to capture input mode, which allows the mode to be tailored to maximize overlap. A thicker buried oxide layer can reduce the leakage toward the Si substrate. While transverse electric (TE) modes suffer less leakage, the transverse magnetic (TM) modes suffer less transition and scattering loss. However, with this technology, a taper can be designed with distinct features from both TE and TM sections, optimizing performance.

Technology Benefits

Intermediate layer Silicon nitride Both TE and TM features

Technology Application

Edge couplingIndustrial solution

Detailed Technology Description

Minghao QuiPurdue Electrical and Computer EngineeringMURI Project

Countries

United States

Application No.

None

Country/Region

USA

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