研究目的
Investigating the reduction of switching times and gain fluctuations in semiconductor optical amplifier-based electro-optical switches using multi-impulse step injected current technique.
研究成果
The MISIC technique effectively reduces switching times to 115 ps and minimizes output power fluctuations in SOA-based electro-optical switches, offering a significant improvement over previous methods. The study also provides a foundation for designing faster SOA-based devices and exploring new pulse formats for enhanced switching speeds.
研究不足
The study is limited by the nonlinear behavior of the SOA under large signal conditions, which the small-signal EC model cannot fully predict. Additionally, the technique's effectiveness varies with the bias current and proximity to gain saturation levels.
1：Experimental Design and Method Selection:
The study employs a chip-on-carrier semiconductor optical amplifier (SOA-COC) with high optical contrast, using multi-impulse step injected current (MISIC) technique for switching.
2：Sample Selection and Data Sources:
A commercial SOA-COC (NL-OEC-1550-CocMW651) with specific characteristics is used.
3：List of Experimental Equipment and Materials:
Includes a CW tunable semiconductor laser, optical isolator, SOA-COC, variable optical attenuator, 40 GHz digital communication analyzer, Agilent J-BERT N4903B pulse generator, and microwave amplifier setup.
4：Experimental Procedures and Operational Workflow:
The setup involves generating composite pulse formats to switch the SOA, measuring optical response, and comparing with simulations.
5：Data Analysis Methods:
Numerical analysis based on equivalent circuits (ECs) and comparison with experimental data.
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