作者
Anatol Khilo, Miloš A Popović, Mohammad Araghchini, Franz X Kärtner
发表日期
2010/7/19
期刊
Optics express
卷号
18
期号
15
页码范围
15790-15806
出版商
Optica Publishing Group
简介
A new, efficient adiabatic in-plane fiber-to-chip coupler design is proposed. In this design, the light from the fiber is coupled into a low-index waveguide with matching mode size. The mode is first adiabatically reduced in size with a rib taper, and then transferred into a high-index (e.g. silicon) waveguide with an inverse taper. The two-stage design allows to reduce the coupler length multiple times in comparison with pure inverse taper-based couplers of similar efficiency. The magnitude of length reduction increases with the refractive index of the low-index waveguide and the fiber mode size.
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A Khilo, MA Popović, M Araghchini, FX Kärtner - Optics express, 2010