Designing of Hybrid Photonic Crystal Fiber for Better Filter Characteristics Using Gallium Nitride

In today’s era of fast and miniaturized technology, photonic crystal fibers (PCFs) are quite popular in the field of optical sensing network systems. In addition to the advantage of having minimum dispersion in the network, PCFs have minimum power consumption, lower confinement losses, and higher birefringence than optical fibers. These attributes prove to be suitable for filtering applications. A hybrid photonic crystal fiber (HPCF), having five layered air holes of elliptical shape and a ring waveguide at core, has been proposed having Gallium Nitride (GaN) as the wafer material, which achieves a power of 0 dB at 1.03 μm and a maximum power of nearly 0.15 W, i.e., −8.23 dB at 1.55 μm. For hybrid, transverse electric (TE), and transverse magnetic (TM) mode, it supports narrow band gaps of 0.095822–0.130652, 0.0958–0.1365, and 0.095822–0.136521, respectively. Proposed design is easy to fabricate and provides better results than the already done research in the past.