作者
Yun Wang, Xu Wang, Jonas Flueckiger, Han Yun, Wei Shi, Richard Bojko, Nicolas AF Jaeger, Lukas Chrostowski
发表日期
2014/8/25
期刊
Optics express
卷号
22
期号
17
页码范围
20652-20662
出版商
Optica Publishing Group
简介
We demonstrate fully-etched fiber-waveguide grating couplers with sub-wavelength gratings showing high coupling efficiency as well as low back reflections for both transverse electric (TE) and transverse magnetic (TM) modes. The power reflection coefficients for the TE and TM modes have been significantly suppressed to −16.2 dB and −20.8 dB, respectively. Focusing grating lines have also been used to reduce the footprint of the design. Our sub-wavelength grating couplers for the TE and TM modes show respective measured insertion losses of 4.1 dB and 3.7 dB with 1-dB bandwidths of 30.6 nm (3-dB bandwidth of 52.3 nm) and 47.5 nm (3-dB bandwidth of 81.5 nm), respectively.
学术搜索中的文章
Y Wang, X Wang, J Flueckiger, H Yun, W Shi, R Bojko… - Optics express, 2014