Large-mode-volume transverse-electric-polarized distributed feedback cavity on silicon-on-insulator

Xiangjie Zhao; Yong Zhang; Cheng Zeng; Danping Li; Ge Gao; Qinzhong Huang; Yi Wang; Jinzhong Yu; Jinsong Xia

doi:doi:10.3788/COL201513.101301

Chinese Optics Letters, 2015, 13 (10): 101301, Published Online: Sep. 13, 2018

Large-mode-volume transverse-electric-polarized distributed feedback cavity on silicon-on-insulator Download： 847次

Xiangjie Zhao ¹Yong Zhang ¹Cheng Zeng ¹Danping Li ¹Ge Gao ¹Qinzhong Huang ¹Yi Wang ¹Jinzhong Yu ^1,2Jinsong Xia ^1,*

Author Affiliations

¹ Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China

² Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

Figures & Tables

Fig. 1. (a) Longitude mode distribution and (c) the transmission spectrum of a λ/4 shifted DFB cavity for different values of κL, (b) flatness of the longitude mode profile versus κL, and (d) the linewidth of the resonance mode versus κL.

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Fig. 2. 2D-FDTD simulation result of λ/4 shifted DFB cavity: the mode profile of the three cavities with lengths of 25, 50, and 75 μm.

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Fig. 3. (a) Coupling coefficient of the rib and strip waveguide as a function of the corrugation length and field distribution of the fundamental TE mode for (b) the rib and (c) the strip waveguide, where the dashed line indicates the sidewall corrugation.

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Fig. 4. (a) SEM image of the phase-shift region and the sidewall corrugation (inset) of the DFB cavity and (b) optical microscope micrographs of the whole cavity C.

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Fig. 5. (a) Illustration of the measurement experiment setup and (b) the measured transmission spectrum of cavities A, B, and C. The inset is a Lorentz fit of the resonance peak for cavity C.

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Fig. 6. Coupling coefficient as a function of the corrugation length on the rib waveguides.

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Table1. Experiment Parameters

Cavity	Coupling Coefficient $κ$ ( ${cm}^{- 1}$ )	Cavity Length (mm)	$κ L$	Linewidth (nm)
A	33	0.505	1.7	0.493
B	33	1.090	3.6	0.174
C	12	2.860	3.4	0.069

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Xiangjie Zhao, Yong Zhang, Cheng Zeng, Danping Li, Ge Gao, Qinzhong Huang, Yi Wang, Jinzhong Yu, Jinsong Xia. Large-mode-volume transverse-electric-polarized distributed feedback cavity on silicon-on-insulator[J]. Chinese Optics Letters, 2015, 13(10): 101301.

Large-mode-volume transverse-electric-polarized distributed feedback cavity on silicon-on-insulator Download： 847次

Fig. 1. (a) Longitude mode distribution and (c) the transmission spectrum of a λ/4 shifted DFB cavity for different values of κL, (b) flatness of the longitude mode profile versus κL, and (d) the linewidth of the resonance mode versus κL.

Fig. 2. 2D-FDTD simulation result of λ/4 shifted DFB cavity: the mode profile of the three cavities with lengths of 25, 50, and 75 μm.

Fig. 3. (a) Coupling coefficient of the rib and strip waveguide as a function of the corrugation length and field distribution of the fundamental TE mode for (b) the rib and (c) the strip waveguide, where the dashed line indicates the sidewall corrugation.

Fig. 4. (a) SEM image of the phase-shift region and the sidewall corrugation (inset) of the DFB cavity and (b) optical microscope micrographs of the whole cavity C.

Fig. 5. (a) Illustration of the measurement experiment setup and (b) the measured transmission spectrum of cavities A, B, and C. The inset is a Lorentz fit of the resonance peak for cavity C.

Fig. 6. Coupling coefficient as a function of the corrugation length on the rib waveguides.

Table1. Experiment Parameters

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Large-mode-volume transverse-electric-polarized distributed feedback cavity on silicon-on-insulator Download： 847次

Fig. 1. (a) Longitude mode distribution and (c) the transmission spectrum of a λ/4 shifted DFB cavity for different values of κL, (b) flatness of the longitude mode profile versus κL, and (d) the linewidth of the resonance mode versus κL.

Fig. 2. 2D-FDTD simulation result of λ/4 shifted DFB cavity: the mode profile of the three cavities with lengths of 25, 50, and 75 μm.

Fig. 3. (a) Coupling coefficient of the rib and strip waveguide as a function of the corrugation length and field distribution of the fundamental TE mode for (b) the rib and (c) the strip waveguide, where the dashed line indicates the sidewall corrugation.

Fig. 4. (a) SEM image of the phase-shift region and the sidewall corrugation (inset) of the DFB cavity and (b) optical microscope micrographs of the whole cavity C.

Fig. 5. (a) Illustration of the measurement experiment setup and (b) the measured transmission spectrum of cavities A, B, and C. The inset is a Lorentz fit of the resonance peak for cavity C.

Fig. 6. Coupling coefficient as a function of the corrugation length on the rib waveguides.

Table1. Experiment Parameters

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