Investigation on gain improvement of erbium doped fiber amplifier (EDFA) by using dual pumped double pass scheme

The purpose of this research is to enhance the gain signal amplification by using dual pump double pass configuration in comparative with single pump double pass that are commonly used as conventional optical amplifier configuration in optical communication system nowadays. Two input signals power have been implemented which are -30 and 0 decibel (dB). The input signal defined as low and high input signals power by using a pump power of 1480 nm. The amplification of EDFA in this study have been taken place in conventional band (C) band and long wavelength band (L) band of EDFA within the range of 1515 to 1615 nm. Therefore, to understand the performance of the gain amplification, the OptiSystem software simulator version 13 has been used for simulation and the values of fiber length and pump power has been varied for both configurations. It has been found that the, dual pump double pass configuration has shown better gain performance at lower input signal power compared to the single pump double pass configuration

A v-shape optical pin interface for board level optical interconnect

This paper introduces a new interface of an optical pin for Printed Circuit Boards (PCBs), the V-shape cut type which is an innovation from the 90-degree cut type of optical pin. The effectiveness is determined by optical characteristics through OptiCAD and by experiment. The simulation used a model of ray tracing analysis which is a one to two (split) connection function model. For the experiment, a Polymer Optical Fibre (POF) V-shape optical pin has been fabricated. It was found that the V-shaped optical pin has a multi-branched function and is applicable to optical interconnection

Integrated optics europium aluminum polymer optical waveguide with graded index circular core

A Europium Aluminum Benzyl Methacrylate (Eu-Al/BzMA) integrated optical waveguide with 50 μm graded-index multimode circular core is fabricated by applying the Mosquito method for the potential application of optical interconnect. The parabolic index profile of the waveguide core is measured to confirm the profile exhibited by the waveguide. A preliminary experiment of the signal transmission is performed at 26 Gb/s to evaluate its capability in high dense and speed optical interconnections. According to the results, the waveguide successfully demonstrated free bit-error-rate through 5 cm waveguide transmission

Simulation of optical planar waveguide sensor for microplastics detection in water

Nowadays, microplastics pollution has become a global concern as it endangers the ecology, marine animals, and cause health threats to human beings. This paper attempted to simulate an optical planar waveguide sensor for microplastics detection in water via Wave Optics Module-COMSOL Multiphysics®. The analyte refractive index was ranged from 1.4800 to 1.5000 RIU, in reference to the microplastics refractive index. The simulation results showed significant variations in the evanescent waves of the sensor at different analyte refractive indices, thus proving that the sensor has potential for microplastics detection in water with sensitivity of 0.0040 in dimensionless unit

Flat-gain and wideband EDFA by using dual stage amplifier technique

In this paper, the flat-gain and wideband amplification of erbium-doped fiber amplifier (EDFA) was demonstrated by using a dual stage amplifier technique. The performance of dual stage amplifiers was investigated at high (- 10 dBm) and low (-30 dBm) input signal powers and then compared with that of single stage amplifier performance in terms of varying length of the gain medium, pump power and input signal power. Both stages of amplifiers showed better amplification performance at low input signal power of -30 dBm, as compared to high input signal power of -10 dBm. The dual stage amplifier showed better amplification for all experiments in comparison with the single stage amplifier. The dual stage amplifier gave the highest gain from the gain medium the of 2 m and 20 m for EDF1 and EDF2, respectively, with the highest pump power of 700 mW. Succinctly, through the dual stage amplifier technique, flat-gain and wideband EDFA were significantly achieved

Investigations on europium aluminum incorporated polymer composite optical waveguide amplifier

The gain performance of 50-iun core diameter graded-index (GI) multimode europium aluminum benzyl methacrylate (Eu-Al/BzMA) waveguide was investigated by numerically solving rate and propagation equations using MATLAB. At a fixed waveguide length of 10 cm and gain medium concentration of 13 wt.%, optical gain was found to be dependent on pump power and input signal power. This paper utilized a 532 nm wavelength pump with power varied from 100 mW to 500 mW, together with low (-30 dBm) and high (0 dBm) input signal powers, within the amplification range of 580 to 640 nm wavelength. With the highest pumping power of 500 mW and the lowest input signal power of -30 dBm, a 29-dB optical gain with wavelength of 617 nm was observed from forward pumping amplification. For comparison, an identical waveguide in terms of properties was fabricated through an innovative fabrication method for polymer waveguide - the Mosquito method. The fabricated waveguide was then experimentally tested for -30 dBm input signal power with 200 mW pump power in the attempt to realize future real-world applications of short reach networks such as in Local Area Network (LAN) and in-vehicle optical interconnects