Research Focus

Optical amplifiers are used in optical communication network systems. The function of the optical amplifier is to restore the signal power level, which attenuates along the length of its propagation. Optical amplifiers include the SOA, EDFA and Raman Amplifiers. The works on RE-doped all optical fiber amplifiers focus on achieving  […]

The work on all optical sensor includes “Health Monitoring in Honeycomb Sandwich Composite for Aircraft Structure using Fiber Bragg Gratings”,  “All Fiber Distributed Displacement Sensor” and “Long Period Fibre Grating (LPFG) Ethanol Sensor Based on Surface Plasmon Resonance”. The aircraft structure is subjected to continuous dynamic loads and the investigation […]

Maxwell-Duffing approach is applied to investigate the optical bistability in ferroelectric materials with Kerr nonlinearity and the Landau-Khalatnikov dynamical equation is used with anharmonic potential as the constitutive relation.

Ferroelectric oxides with perovskite structure possess useful properties (high dielectric constant, large spontaneous polarization, optical nonlinearity). Expressions for nonlinear optical susceptibilities of ferroelectric in the FIR spectral region are derived. Nonlinear process and a feedback mechanism are necessary to obtain optical bistability phenomenon. Optical nonlinearities in single mode optical fiber […]

Nano-slot-waveguide produces high E-field amplitude, optical power, and optical intensity in low-index materials at levels that cannot be achieved with conventional waveguides. This property allows highly efficient interaction between fields and active materials, which may lead to all-optical switching, optical amplification and optical detection on integrated photonics. The work focuses […]

The work includes hybrid photonic crystal WDM couplers, highly multimode symmetrical and asymmetrical waveguide couplers and its application in optical security access system.

The group works on sol gel processing of glass-ceramics and metal oxides thin films and nano-particles with active doping materials. Glass-ceramic materials share the properties of both glasses and ceramics. The materials used include SiO2, ZrO2, TiO2 doped with Er, Yb, Eu, and Rb for applications as EDWA, sensor, and […]

Whispering Gallery Mode micro-resonator is investigated for application as highly sensitive micro sensor. It is a class of cavity devices with exceptional properties such as very high power density and very narrow linewidth.

Greater bandwidth with extraordinary growth of internet applications have brought multiwavelength laser sources the challenge in today’s optical communication systems. The multi-wavelength Brillouin RE-doped fiber lasers are being investigated for generating multiple wavelength signals, in which these signals have the intrinsic properties of rigid frequency spacing and extremely narrow linewidth.  […]