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This paper discusses on-chip optical isolators with bismuth-iron-garnet (BIG) overcladding on a ring resonator for photonic integrated circuit applications. Characterization of BIG prepared by RF magnetron sputtering and pulsed laser deposition methods are also discussed.
Interference, one of the major physical phenomena, relies on coherent superposition of waves, undertaking different phase lag. Considering vectorial near-fields structure, the fundamental concept was reconsidered, reformulated, and demonstrated at optical and radio frequencies.
We experimentally demonstrate a continuously-tunable quasi-THz RF-photonic phase shifter based on a dual-phase-shifted waveguide Bragg grating on silicon. Phase shifts up to ∼90°are demonstrated over the 16–20 GHz band, constrained only by instrumentation limitations.
A novel high-speed Mach-Zehnder modulator (MZM) fully integrated into a 90 nm CMOS process is presented. The MZM features ‘double-pass’ optical phase shifter segments, and the first use of integrated inductors in a ‘velocity-matched’ distributed-electrode configuration.
We report an on-chip all-optical CMOS-compatible radio frequency spectrum analyzer with a bandwidth exceeding 2.5 THz, and use it to measure the intensity power spectra of mode-locked lasers with repetition rates up to 400 GHz.
We report on the generation of microwave frequencies of up to 50 GHz by secondorder nonlinear mixing of two optical carriers at 1540 nm in a silicon-organic hybrid slot waveguide.
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