Four-channel CWDM transmitter chip based on thin-film lithium niobate platform

Kaixuan Chen; Gengxin Chen; Ziliang Ruan; Xuancong Fan; Junwei Zhang; Ranfeng Gan; Jie Liu; Daoxin Dai; Changjian Guo; Liu Liu

doi:10.1088/1674-4926/43/11/112301

Journals >Journal of Semiconductors >Volume 43 >Issue 11 >Page 112301 > Article

Journal of Semiconductors
Vol. 43, Issue 11, 112301 (2022)

Four-channel CWDM transmitter chip based on thin-film lithium niobate platform

Kaixuan Chen^1、2, Gengxin Chen³, Ziliang Ruan³, Xuancong Fan^1、2, Junwei Zhang⁴, Ranfeng Gan¹, Jie Liu⁴, Daoxin Dai^3、5, Changjian Guo^1、2, and Liu Liu^3、5、*

Author Affiliations

¹Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Higher-Education Mega-Center, Guangzhou 510006, China

²National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China

³State Key Laboratory for Modern Optical Instrumentation, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Hangzhou 310058, China

⁴State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510006, China

⁵Jiaxing Key Laboratory of Photonic Sensing & Intelligent Imaging, Intelligent Optics & Photonics Research Center, Jiaxing Research Institute, Zhejiang University, Jiaxing 314000, China

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DOI: 10.1088/1674-4926/43/11/112301 Cite this Article

Kaixuan Chen, Gengxin Chen, Ziliang Ruan, Xuancong Fan, Junwei Zhang, Ranfeng Gan, Jie Liu, Daoxin Dai, Changjian Guo, Liu Liu. Four-channel CWDM transmitter chip based on thin-film lithium niobate platform[J]. Journal of Semiconductors, 2022, 43(11): 112301 Copy Citation Text

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(Color online) (Color online) Proposed four-channel CWDM transmitter on the TFLN platform. 3D view of (a) whole structure and (b) CWDM device based on the AMMI structure. (c) Cross-sectional view of the modulation section. (d) Top view of the CLTW electrode.

Fig. 1. (Color online) (Color online) Proposed four-channel CWDM transmitter on the TFLN platform. 3D view of (a) whole structure and (b) CWDM device based on the AMMI structure. (c) Cross-sectional view of the modulation section. (d) Top view of the CLTW electrode.

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Optical images of (a) whole transmitter and (b) four-channel CWDM device. Scanning electron microscope images of (c) cross-sectional view and (d) top view of the modulation section.

Fig. 2. Optical images of (a) whole transmitter and (b) four-channel CWDM device. Scanning electron microscope images of (c) cross-sectional view and (d) top view of the modulation section.

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Fig. 3. (Color online) (a) Measured and simulated transmission spectral responses of the fabricated CWDM device. (b) Measured transmission spectral responses of the four input GCs and the common output GC.

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Fig. 4. (Color online) Normalized optical transmission of the fabricated four modulators as a function of the applied voltage for (a) Ch. 1 and Ch. 2, and (b) Ch. 3 and Ch. 4.

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Fig. 5. (Color online) Measured EE (a) transmissionsS₁₂ and (b) reflectionsS₁₁ for the four modulators.

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Fig. 6. (Color online) Measured EE crosstalk characteristics of the fabricated CWDM transmitter for (a) Ch. 1, (b) Ch. 2, (c) Ch. 3, and (d) Ch. 4.

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Fig. 7. (Color online) Measured and simulated EO responses for the four modulators.

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Fig. 8. (Color online) (a) Experimental setup for high-speed data transmission measurements. PC: polarization controller. Measured optical eye diagrams for the OOK format at a data rate of 64 Gb/s for (b) Ch. 1, (c) Ch. 2, (d) Ch. 3, and (e) Ch. 4.

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Fig. 9. (Color online) Measured optical eye diagrams for the PAM-4 format at a data rate of 100 Gb/s for (a) Ch. 1, (b) Ch. 2, (c) Ch. 3, and (d) Ch. 4.

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