Ms. Hailan Ren Profile

Hailan Ren

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Proceedings Article | 3 June 2024 Paper

PAM4-based SFP56 64G SR optical module design

Fengjia Gao, Hailan Ren

Proceedings Volume 13182, 1318220 (2024) https://doi.org/10.1117/12.3030485

KEYWORDS: Digital signal processing, Signal processing, Signal attenuation, Transmitters, Optical transmission, Power supplies, Design, Eye, Optical signal processing, Modulation

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As the demand for data centers and high performance computing continues to grow, the need for high-speed and high-efficiency data transmission technology is also on the rise, and PAM4 technology has become one of the key technologies to realize high-speed data transmission due to its advantages in increasing channel capacity. In this paper, an SFP56 packaged optical module based on PAM4 modulation is designed, and the optical module realizes short-distance transmission at 64 Gbps through a DSP chip. The purpose of this module design is to improve the bandwidth density and energy efficiency of the interconnections within a data center. The design of this paper utilizes the advanced PAM4 signal processing algorithm to improve the transmission rate of the module. In addition, this paper utilizes the FEC technique to reduce the BER and further improve the transmission quality and reliability. At the same time, COB technology is used for packaging to reduce the cost of individual modules, and VCSEL lasers are used to achieve optical signal transmission in multimode fiber to further reduce the cost of individual modules.

Proceedings Article | 19 February 2024 Paper

Design and implementation scheme of evaluation board based on STM32 for SFP optical module sensitivity test

Zihe Qin, Hailan Ren, Yun Cheng

Proceedings Volume 13063, 130631A (2024) https://doi.org/10.1117/12.3021383

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Small Form Pluggable (SFP) optical modules have become the mainstream optical module packaging because of their advantages such as small size, low cost, and high reliability. Sensitivity testing is an important step to verify the performance of optical modules. The experimental platform utilized to test the sensitivity of SFP optical modules currently has some issues, including complex equipment structure, high volume, and poor testing efficiency. This paper proposes and implements an evaluation board that can be used to enhance the experimental platform for the SFP sensitivity test to address these issues. The evaluation board's merits include its compact size, strong expansibility, and ease of use. The experimental results demonstrate that using the evaluation board to construct an experimental platform for SFP optical module sensitivity test significantly reduces the average test time and triples the overall test efficiency.

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