研究目的
Design and fabricate an Indium-phosphide-based monolithically integrated photonic chip for on-chip photonic and microwave generation, demonstrating various waveforms including single tone, multi-tone, and chaotic signal generation by adjusting injection currents.
研究成果
The study successfully demonstrated an InP-based monolithically integrated photonic chip capable of generating various waveforms, including single tone, multi-tone, and chaotic signals, by adjusting injection currents. High-quality microwave signals tunable from 25.5 GHz to 26.4 GHz were obtained without external electrical filters and photodetectors, with SSB phase noise less than ?90 dBc/Hz at a 10-kHz offset from the carrier frequency.
研究不足
The limited bandwidth of the photodetector restricted the frequency tuning range of the optoelectronic oscillator (OEO). Further optimization of the photodetector's bandwidth could enable a wider frequency-tunable range.
1：Experimental Design and Method Selection:
The study involved designing and fabricating a monolithically integrated photonic chip comprising an amplified feedback laser (AFL) and a photodetector. The dynamic states of the chip were controlled by tuning the amplifier section's injection currents.
2：Sample Selection and Data Sources:
The integrated laser-photodetector chip was mounted on a ground-signal-ground (GSG) subcarrier for testing. Optical and electrical spectra, temporal waveforms, and phase portraits were measured under different amplifier currents.
3：List of Experimental Equipment and Materials:
Equipment included an electrical amplifier (EA), optical spectrum analyzer (OSA), oscilloscope (OSC), electrical spectrum analyzer (ESA), and a thermo-electric cooler (TEC). Materials involved the InP-based integrated photonic chip.
4：Experimental Procedures and Operational Workflow:
The chip's dynamic states were characterized by adjusting the injection currents. The output signals were monitored through an OSA and an ESA, with the temporal waveforms and RF spectra recorded.
5：Data Analysis Methods:
The optical and RF spectra, temporal waveforms, and phase portraits were analyzed to characterize the chip's dynamic states and the quality of the generated microwave signals.
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
