Design of Photonic Quasi crystal Fiber for Wide band MidIR Supercontinnum Generation

Electronics And Communication Engineering

A chalcogenide (ChG) photonic quasi-crystal fiber (PQF) for wideband mid-IR (MIR) supercontinnum generation (SC) is designed. The numerical demonstration of Supercontinnum generation in the proposed Photonic Quasi Fiber spans from 2 to 15 µm wavelengths for a pulse power of 2 kW. Besides, the proposed Photonic Quasi Fiber offers a high birefringence (10-3 to 10-2) from 3.5 to 15 µm wavelengths and exhibits a low confinement loss (10-7to 10-1) for the wavelengths from 2 to 15 µm with single mode behavior. The polarized spectral broadening of continuum is realized for the first time from 2 to 15 µm using the proposed Photonic quasi fiber with a length of 8 mm. Thus, the proposed Photonic Quasi Fiber based Super Continuum source is a good candidate for applications such as optical communication, early cancer diagnostics and optical sensing.

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