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Establishing relations between fundamental effects in far‐flung areas of physics is a subject of great interest in the current research. Realization of a novel photonic system akin to the radio‐frequency superconducting quantum interference device (RF‐SQUID), in a fiber laser cavity with epsilon‐near‐zero (ENZ) nanolayers as intra‐cavity components is reported here. Emulating the RF‐SQUID scheme,...
A Mach–Zehnder interferometer (MZI) which is used as a wavelength-spacing tunable comb filter in a fiber ring laser is built by employing an optical variable delay line (OVDL). Stable multi-wavelength semiconductor optical amplifier (SOA)-fiber ring laser based on an SOA and the MZI comb filter is achieved. Wavelength spacing can be continuously tuned by adjusting the OVDL and, as an example, multi-wavelength...
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