研究目的
To realize a stable, chip-level RF synthesizer with low phase noise using symmetric multimode multi-section semiconductor laser pairs.
研究成果
The paper demonstrates the potential of self-mode-locked symmetric laser pairs for building low-phase-noise RF synthesizers. A phase noise performance of -92 dBc/Hz at a 10 kHz offset and a timing jitter of 72 fs were achieved for a 26.4 GHz intermodal oscillation frequency. The system also enabled RF frequency synthesis over 11-13 GHz with a phase noise of -100 dBc/Hz.
研究不足
The study is limited by the fabrication error of the laser pairs, which affects the tuning of mode numbers. The maximum number of self-mode-locked modes is 5, limiting phase noise performance improvements.
1：Experimental Design and Method Selection:
The study employs symmetric multimode multi-section semiconductor laser pairs with a shared DBR and counterpropagating laser output for self-mode-locking.
2：Sample Selection and Data Sources:
The fabricated symmetric lasers are used, with specifications including a 400 μm SOA, a 300 μm PM, and a 150 μm front DBR.
3：List of Experimental Equipment and Materials:
Includes a high-speed photodetector (Discovery Semiconductor DSC30S), optical spectrum analyzer, RF spectrum analyzer, and EDFA (Wanshuo WS-15EA).
4：Experimental Procedures and Operational Workflow:
The process involves adjusting feedback power levels for optimal mode-locking, measuring phase noise performance, and tuning the laser sections for frequency synthesis.
5：Data Analysis Methods:
Phase noise performance is analyzed using high-resolution FFT with a 90 dB Taylor window.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
