We discuss microwave signal processing (MSP) using on-chip passive silicon photonic devices.
By using the through port of a self-coupled micro-resonator (SCMR), a microwave photonic notch filter is achieved with a tuning range over 20 GHz and a maximum rejection ratio of 25 dB. Through frequency extracting from an optical frequency comb using the drop ports of SCMRs, photonic generation of 39-GHz and 29-GHz MMW signals are achieved. A photonic RF phase shifter based on a single micro-disk resonator can provide a phase-shift approaching 2π.
Yikai Su, "Microwave photonic filtering using a resonance-split loop on silicon (Conference Presentation)," Proc. SPIE 10536, Smart Photonic and Optoelectronic Integrated Circuits XX, 1053618 (Presented at SPIE OPTO: January 31, 2018; Published: 14 March 2018); https://doi.org/10.1117/12.2292168.5751513309001.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon