Misalignment-Tolerant Spot-Size Converter for Efficient Coupling Between Single-Mode Fibers and Integrated Optical Receivers

• Main Authors: Neil Na, Tao Yin
• Format: Article
• Language: English
• Published: IEEE 2012-01-01
• Series: IEEE Photonics Journal
• Subjects: Spot-size converter (SSC); single-mode fiber (SMF); integrated optical receiver (IOR); silicon-on-insulator (SOI); silicon germanium
• Online Access: https://ieeexplore.ieee.org/document/6125963/
• ISSN: 1943-0655

We design a spot-size converter (SSC) on silicon-on-insulator (SOI) platform to interface an integrated optical receiver (IOR) with a single-mode fiber (SMF). Because of the capability of coupling higher order modes by the proposed device, the tolerance of fiber-to-waveguide misalignment is much improved. The concept is suitable for receivers consisting of multimode-compatible components such as the echelle grating demultiplexer and the Ge waveguide photodetector.