Numerical Investigation of a Short Polarization Beam Splitter Based on Dual-Core Photonic Crystal Fiber with As2S3 Layer

Abstract

A polarization beam splitter is an important component of modern optical system, especially a splitter that combines the structural flexibility of photonic crystal fiber and the optical modulation of functional material. Thus, this paper presents a compact dual-core photonic crystal fiber polarization beam splitter based on thin layer As2S3. The mature finite element method was utilized to simulate the performance of the proposed splitter. Numerical simulation results indicated that at 1.55 μm, when the fiber device length was 1.0 mm, the x- and y-polarized lights could be split out, the extinction ratio could reach −83.6 dB, of which the bandwidth for extinction ratio better than −20 dB was 280 nm. It also had a low insertion loss of 0.18 dB for the x-polarized light. In addition, it can be completely fabricated using existing processes. The proposed compact polarization beam splitter is a promising candidate that can be used in various optical fields.

Ultra-short polarization beam splitter based on dual-core photonic crystal fiber with surface plasmon resonance effect

“…Table 1 shows the comparisons between other proposed PCF PBSs and this work [37][38][39][40][41][42]. It can be concluded from Table 1 that although the bandwidths of the PBSs proposed in Refs [38,39,42] are slightly wider than that of this work, the DC-PCF PBS proposed in this work has the shortest length. This is more conducive to the development of photonic integration.…”

Recent Progress in Photonic Crystal Devices and Their Applications: A Review

“…The fundamental parts of integrated photonics and communication systems include polarization beam splitters (PBSs) [43,44] and optical power beam splitters (BSs) [45]. While a PBS offers a distinct routing of light in the two polarization states known as the TE and TM [46,47], a BS separates the entering light into many pieces at the output [48,49].…”

Multi-band polarization switch based on magnetic fluid filled dual-core photonic crystal fiber

“…[7,8] With the increasing application of optical fibers in modern optical systems, it is of great significance to study the polarization controllers based on optical fibers. At present, there have been many reports on the research of fiber PBS and fiber polarization filter, [9][10][11][12][13][14][15] but there are still some deficiencies in these reports. Firstly, the cost of introducing elliptical holes or inconsistent round holes to increase birefringence is that it will be a great challenge to fabricate fibers.…”