研究目的
Investigating the design, fabrication, and performance of low-loss multimode glass waveguides with beam-expanded fiber connectors for on-board optical links.
研究成果
The research demonstrated the feasibility of fabricating low-loss multimode glass waveguides with propagation loss as low as 0.035 dB/cm at 1310 nm. The developed expanded beam connector concept showed promise for high-throughput assembly, though further optimization is needed to reduce coupling loss variability. The study highlights the potential of glass waveguides for high-density optical interconnects in data center applications.
研究不足
The study faced challenges in achieving uniform waveguide index profiles due to mask failures and lithography defects. The connector assembly process showed variability in coupling loss due to machining and assembly tolerances.
1：Experimental Design and Method Selection:
The study involved designing and fabricating ion-exchange glass waveguides with a focus on achieving low propagation loss and efficient coupling to optical fibers. A two-step thermal ion-exchange process was developed for large-scale manufacturing.
2：Sample Selection and Data Sources:
The research utilized glass sheets of 9” x 12” for waveguide fabrication. The waveguides were characterized using refractive index measurements, loss spectrum measurements, and insertion loss measurements.
3：List of Experimental Equipment and Materials:
Equipment included a broadband 1310 nm light source, optical spectrum analyzer, and alignment stages for fiber coupling. Materials included low-impurity aluminosilicate glass and index matching gel.
4：Experimental Procedures and Operational Workflow:
The process involved waveguide design simulation, fabrication using ion-exchange, characterization of refractive index and optical loss, and assembly of expanded beam connectors.
5：Data Analysis Methods:
Data analysis included simulation of refractive index profiles, measurement of propagation and coupling losses, and evaluation of crossing and bend losses.
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