Group-IV semiconductor based photonic waveguide devices for versatile pulsed data processing

基于 IV 族半导体的光子波导器件，用于多功能脉冲数据处理

• 批准号: 20F20374
• 负责人: 山下 真司
• 金额: $ 1.47万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2020
• 资助国家: 日本
• 起止时间: 2020-11-13 至 2023-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20F20374/
• 关键词: Silicon photonics; Nonlinear optics; Group-IV semiconductor; micro-ring resonator; all-optical processing; Mode-locked fiber laser; VCSEL; Nonlinear waveguide

In this JSPS research fund between Apr.2022 and Nov. 2022, we worked on 25-Gbps all-optical data processing based on the silicon carbide (SiC) micro-ring resonator. This SiC micro-ring resonator with a nonlinear refractive index of 3.05×10-14 cm2/W of is retrieved from the pump-probe analysis. In addition, the eye diagram of the wavelength-converted data exhibits its signal-to-noise and on/off-extinction ratios (SNR and ER) of 5.6 dB and 11.8 dB, respectively. For the 25-Gbps data inversion, the SNR and ER can be evaluated as 4.8-dB and 10.2-dB, respectively. In addition, the rising and falling time in an ultrafast switching is also measured as less than 22 ps. This phenomenon causes all-optical data processing including both wavelength switching and format conversion. Therefore, the highly nonlinear optical SiC micro-ring resonator can achieve error-free operation with a bit-error ratio (BER) lower than 1×10-5 at 25 Gbps.In taddition, the O-band Ge p-i-n photodetector (PD) are demonstrated to receive the NRZ-OOK data beyond 60 Gbps. After optimizing the transmission-line designs, the Ge PD improves its RLC response to enhance the receiving bandwidth. Decreasing the transmission-line length from 280 μm to 80 μm extends the S11 spectral response from 51 to 57 GHz. When the Ge PD is used to receive the optical NRZ-OOK data stream, the long-electrode device exhibts 53-Gbps receiving performance. The short-electrode Ge PD receives the NRZ-OOK data beyond 56 Gbps and 60 Gbps under error-free communication criterion of BER<10－12 and BER<10－9 , respectively.

在2022年4月至2022年11月期间的JSPS研究基金中，我们致力于基于碳化硅（SiC）微环谐振器的25-Gbps全光数据处理。这种SiC微环谐振器的非线性折射率为从泵浦探针分析中检索到 3.05×10-14 cm2/W 此外，波长转换数据的眼图显示。其信噪比和开/关消光比（SNR 和 ER）分别为 5.6 dB 和 11.8 dB 对于 25 Gbps 数据反演，SNR 和 ER 可评估为 4.8 dB 和 10.2 dB。此外，超快开关的上升时间和下降时间也被测量为小于 22 ps，这种现象导致了全光。因此，高度非线性光学SiC微环谐振器可以在25 Gbps下实现误码率（BER）低于1×10-5的无差错操作。 O 波段 Ge p-i-n 光电探测器 (PD) 经证明可以接收超过 60 Gbps 的 NRZ-OOK 数据 在优化传输线设计后，Ge PD 改善了其 RLC 响应。将传输线长度从 280 μm 减少到 80 μm，将 S11 光谱响应从 51 GHz 扩展到 57 GHz。表现出 53-Gbps 接收性能，短电极 Ge PD 接收超过 56 Gbps 和 60 Gbps 的 NRZ-OOK 数据。分别在BER<10－12和BER<10－9的无差错通信标准下的Gbps。

项目成果

All-Optical 25-Gbps Silicon Carbide Kerr Switching Intensity Modulator On Silicon Platform

硅平台上的全光 25 Gbps 碳化硅 Kerr 开关强度调制器

• 发表时间: 2022
• 作者: Chih;Gong
• 通讯作者: Gong

Photonic Crystal Structured Multi-Mode VCSELs Enabling 92-Gbit/s QAM-OFDM Transmission

光子晶体结构多模 VCSEL 支持 92 Gbit/s QAM-OFDM 传输

• DOI: 10.1109/jlt.2021.3073898
• 发表时间: 2021-07-01
• 期刊: Journal of Lightwave Technology
• 影响因子: 4.7
• 作者: Yu;Cheng;Wei;Chih;K. Choquette;G. Lin
• 通讯作者: G. Lin

Review on optical nonlinearity of group-IV semiconducting materials for all-optical processing

全光加工用IV族半导体材料的光学非线性研究进展

• DOI: 10.1063/5.0102342
• 发表时间: 2022
• 影响因子: 5.6
• 作者: Cheng Chih;Fu Cai;Wang Huai;Set Sze Yun;Yamashita Shinji;Lin Gong
• 通讯作者: Lin Gong

All-Optical 25-Gbps Silicon Carbide Kerr Switching Intensity Modulator On Silicon Platform

硅平台上的全光 25 Gbps 碳化硅 Kerr 开关强度调制器

• 发表时间: 2022
• 作者: Chih;Gong
• 通讯作者: Gong

Comparing the Dual-Mode VCSEL in OM4-MMF and GI-SMF Links for NRZ-OOK and 16-QAM-OFDM Transmissions

比较 OM4-MMF 和 GI-SMF 链路中用于 NRZ-OOK 和 16-QAM-OFDM 传输的双模 VCSEL

• DOI: 10.1109/jphot.2022.3168626
• 发表时间: 2022
• 影响因子: 2.4
• 作者: Lee Shao;Cheng Chih;Tseng Hsien;Chen Xin;Lo Wei;Li Kangmei;Wang Chia;Tsai Cheng;Kuo Hao;Li Ming;Lin Gong
• 通讯作者: Lin Gong