CMOS compatible highly efficient grating couplers with a stair-step blaze profile

doi:10.1088/1674-1056/20/7/074212

Abstract A novel grating coupler with a stair-step blaze profile is proposed. The coupler is a CMOS process compatible device and can be used for light coupling in optical communication. The blaze profile can be optimized to obtain a high efficiency of 66.7% for the out-of-plane coupling at the centre wavelength of 1595 nm with a 1 dB bandwidth of 41 nm. Five key parameters of the stair-step blaze grating and their effects on the coupling are discussed for the application in L band telecommunication.

Keywords: grating coupler blaze profile integrated optics silicon-on-insulator

Received: 12 January 2011
Revised: 11 February 2011
Accepted manuscript online:

PACS:	42.79.Ta	(Optical computers, logic elements, interconnects, switches; neural networks)
	42.79.Dj	(Gratings)
	42.81.Qb	(Fiber waveguides, couplers, and arrays)

Cite this article:

Zhou Liang(周亮), Li Zhi-Yong(李智勇), Hu Ying-Tao(胡应涛), Xiong Kang(熊康), Fan Zhong-Chao(樊中朝), Han Wei-Hua(韩伟华), Yu Yu-De (俞育德), and Yu Jin-Zhong (余金中) CMOS compatible highly efficient grating couplers with a stair-step blaze profile 2011 Chin. Phys. B 20 074212

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