All‐fibre phase shifter based on tapered fibre coated with MoWS ₂ ‐rGO

Abstract

In this work, an all-fibre phase shifter using tapered fibre coated with molybdenum tungsten disulfidereduced graphene oxide (MoWS 2 -rGO) is demonstrated. The large evanescent field of tapered fibre allows MoWS 2 -rGO to absorb injected light from a 1400-nm pump. It subsequently modifies the refractive index of both an MoWS 2 -rGO solution and tapered fibre because of the thermo-optic effect. A maximum wavelength shift of 2.489 nm is observed and the equivalent phase shift is 0.91π. The efficiency of the phase shifter is calculated at 0.0175 nm/mW. The proposed phase shifter is beneficial for a variety of applications, specifically for future optical beam-forming networks and all optical signal processing devices.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

All-Optical Modulation Technology Based on 2D Layered Materials

“…Under the condition of controlling light of 290 mW, the maximum phase shift obtained is 8π with an efficiency of 0.029 π/W under 290 mW pumping. Lately, another work was published on phase shifter using MoWS 2 -rGO coated tapered fiber with phase sift of 0.91 π and efficiency 0.0175 nm/mW [138].…”

“…Taking advantage of the physical pro strong light-matter interaction and thickness dependent direct energy bandgap layer phosphorene, a beam signal light can be manipulated by another controllin Under the condition of controlling light of 290 mW, the maximum phase shift obt 8π with an efficiency of 0.029 π/W under 290 mW pumping. Lately, another w published on phase shifter using MoWS2-rGO coated tapered fiber with phase sif π and efficiency 0.0175 nm/mW [138]. On another note, thermo-optics effect is also responsible for amplitude mod and modulation of light polarization.…”

Development of polarization modulator using MXene thin film

“…These 2D materials have proven their potential in optical modulation. For instance, MoWS 2 -rGO is used as phase shifter 14 ; Bi 2 Te 3 is used as temporal and amplitude modulators 15 ; MoS 2 is used as polarization modulator 16 ; and MXene is employed for optical wavelength conversion 17 . The success of 2D materials in optical modulation are attribute to the exceptional optical properties, including strong nonlinearity, fast recovery time and broadband saturable absorption.…”

Photon‐to‐photon polarization modulation using Mxene thin film as modulator

“…As photon has proven the capability in telecommunication, quantum computing, energy source and transmission, the fifth IR is highly potential lead by photon revolution. To achieve the photon revolution, it is crucial to have full control of light propagation properties, including amplitude [3], phase [4], wavelength [5], temporal domain [6], and polarization state. Among the optical properties, polarization modulation is an important light characteristic in most of the photonics systems due to the nature of polarization mode dispersion in optical fibre, polarization‐dependent gain in active optical devices, and polarization‐dependent loss in passive optical components.…”