latifah sarah supian - Academia.edu (original) (raw)

Papers by latifah sarah supian

Baghdad Science Journal, 2021

This paper presents on the design of L-Band Multiwavelength laser for Hybrid Time Division Multip... more This paper presents on the design of L-Band Multiwavelength laser for Hybrid Time Division Multiplexing/ Wavelength Division Multiplexing (TDM/WDM) Passive Optical Network (PON) application. In this design, an L-band Mulltiwavelength Laser is designed as the downstream signals for TDM/WDM PON. The downstream signals ranging from 1569.865 nm to 1581.973 nm with 100GHz spacing. The multiwavelength laser is designed using OptiSystem software and it is integrated into a TDM/WDM PON that is also designed using OptiSystem simulation software. By adapting multiwavelength fiber laser into a TDM/WDM network, a simple and low-cost downstream signal is proposed. From the simulation design, it is found that the proposed design is suitable to be used in TDM/WDM PON for up to 64 Optical Network Units (ONUs).

Journal of Optoelectronics and Advanced Materials, 2015

This paper discuss the theoretical analysis and experimental results of pressure measurement usin... more This paper discuss the theoretical analysis and experimental results of pressure measurement using optical fiber sensor with cladding modification and coating with ZnO (Zinc Oxide as sensitive material to enhanced the performance of sensor that’s uses as sensing probe inside the pressure chamber. The modification fiber was coated by dip coating deposition method. During measurement of fiber sensor, the refractive index changes based on different pressure given. The changing of refractive index affects the phase different of optical path along optical fiber. Extrinsic Fabry – Perot Interferometer (EFPI) method is used to obtain the data measurement. Pressure variables prearranged from 0 to 1…

In Fiber to the x (FTTX) system, fiber optic cable is used to connect any broadband network archi... more In Fiber to the x (FTTX) system, fiber optic cable is used to connect any broadband network architecture for last mile telecommunication application. Next evolution of PON is called Next Generation PON Stage 2 (NG-PON2). In April 2012, The Full Service Access Network (FSAN) announces Time and Wavelength Division Multiplexing (TWDM) became one of superlative resolutions NG-PON2 implementation. In this project, a design of TWDM that meet the requirement of NG-PON2 constructed on International Telecommunication Union/ Telecommunication Standardization Sector (ITU-T) was proposed. The design achieves the minimum requirements of standard ITU-T G.989 and was simulated using Opti System Software Tool. This project implements NG-PON2 systems at 4x10Gbps using four different wavelengths range 1596 1603 nm, fiber link of 40 km and varied the value of power optical splitter from 1:2, 1:4, 1:8, 1:16 and 1:32. Upon completion of design and simulation, the results are evaluated in terms of optica...

2018 IEEE 7th International Conference on Photonics (ICP), 2018

This work demonstrates the non-destructive method to estimate the maturity of the palm oil fruit ... more This work demonstrates the non-destructive method to estimate the maturity of the palm oil fruit bunch, based on the reflective spectroscopy technique. Different samples of palm oil seeds were investigated by measuring the diffuse reflectance of each sample. The results show that we can distinguish the maturity of the fruit bunch by observing the revolution of specular reflectance spectrum obtained from the seeds. Having that information, a simple algorithm to distinguish the ripeness of the palm oil fruit bunch was developed.

Third International Conference on Applications of Optics and Photonics, 2017

In visible optical communication over the multimode PMMA fibers, the overall cost of optical netw... more In visible optical communication over the multimode PMMA fibers, the overall cost of optical network can be reduced by deploying economical splitters for distributing the optical data signals from a point to multipoint in transmission network. The low-cost splitters shall have two main characteristics; good uniformity and high power efficiency. The most cost-effective and environmental friendly optical splitter having those characteristics have been developed. The device material is 100% purely based on the multimode step-index PMMA Polymer Optical Fiber (POF). The region which all fibers merged as single fiber is called as fused-taper POF. This ensures that all fibers are melted and fused properly. The results for uniformity and power efficiency of all splitters have been revealed by injecting red LED transmitter with 650 nm wavelength into input port while each end of output fibers measured by optical power meter. Final analysis shows our fused-taper splitter has low excess loss 0.53 dB and each of the output port has low insertion loss, which the average value is below 7 dB. In addition, the splitter has good uniformity that is 32:37:31% in which it is suitably used for demultiplexer fabrication.

Sains Malaysiana, 2014

Gentian optik polimer (POF) mempunyai banyak kelebihan dan banyak digunakan untuk komunikasi teru... more Gentian optik polimer (POF) mempunyai banyak kelebihan dan banyak digunakan untuk komunikasi terutamanya dalam industri automotif. Komunikasi ini memerlukan maklumat yang banyak dihantar pada satu masa dengan kos yang rendah. Untuk itu pencerai 3×3 POF yang berkonsepkan pemultipleks bahagi jarak gelombang (WDM) yang berkos rendah dan berteknologi hijau difabrikasikan. Pencerai POF ini difabrikasikan dengan menggunakan alat yang murah dan mudah didapati, iaitu tiub besi dan lilin. Teknik fabrikasi yang digunakan adalah dengan memanaskan tiga lembar POF sehingga bahagian tengahnya mencair dan melakur sehingga mengecil dan memanjang berdiameter 1 mm. Pencerai 3x3 POF yang berjaya difabrikasi dicirikan dengan mengukur kehilangan POF sebelum dan selepas hujungnya diratakan dan digilap dengan dua jenis kertas pasir yang berlainan darjah kekasaran. Ini untuk melihat kesan gilapan pada kehilangan isyarat optik. Kehilangan pencerai POF juga diukur pada suhu yang berbeza bagi melihat kesannya...

The Journal of Applied Sciences Research, 2012

Polymer optical fiber has advantages compared to other alternatives communication media such as c... more Polymer optical fiber has advantages compared to other alternatives communication media such as copper, coax cable and glass fiber. POF has bigger bandwidth compared to wireless communication network and POF also free from electromagnetic disruption. POF is suitable for communication system up to distance of 100 meters with data speed of 400 Mbps using polymer step-index type. Thus, POF is effective for short haul data transmission. Applications of POF has widen nowadays including the Ethernet network at home or usually known as fiber to the home (FTTH) and in also used in automotive system. To increase the bandwidth of the transmission system, wavelength division multiplexing technique or WDM is applied in this study using optical splitter. Several signals with different wavelengths are multiplexed and carried over a single fiber and demultiplexed at the end of the communication system to obtain the original signal to be directed to the receiver. The advantage of the device develop...

Journal of Telecommunication, Electronic and Computer Engineering, 2017

This paper discusses the application of Box– Behnken Design (BBD) to get a mathematical model for... more This paper discusses the application of Box– Behnken Design (BBD) to get a mathematical model for chemical vapor liquid detection with the objective of optimizing the optical fiber optic sensor probe. The parameters of input process were considered as variables to create the output parameters (response) using Response Surface Methodology (RSM). Input parameters such as length of probe, diameter of probe, photo-initiator liquid, vacuum pressure of chamber and purity of liquid detector were processed with Box – Behnken design approach for making POF (plastic optical fiber) probe of chemical sensor. Design Expert software was used to design the experiments with randomized runs. The main aim is to create an equation model as a platform for the probe design of POF chemical vapors detection similar to acetone, ethanol and methanol liquid. The experimental data were processed by considering the input parameters. The contribution of this research is the mathematic equation model that applie...

Pemodelan medan magnetik diperlukan sebagai perangkat acuan untuk menentukan nilai dari beberapa ... more Pemodelan medan magnetik diperlukan sebagai perangkat acuan untuk menentukan nilai dari beberapa variabel pengukuran atau proses pelaksanaan percobaan. Pemodelan dilakukan dengan menggunakan data simulasi dari data perangkat lunak atau data percobaan. Pemodelan medan magnet digunakan untuk menentukan nilai kuat medan magnet dan nilai kerapatan fluks magnet yang dihasilkan dari dua buah gulungan kawat Helmholtz. Data simulasi diambil menggunakan aplikasi COMSOL 4.2 untuk melihat model medan magnet dan kerapatan fluks magnet dari dua gulungan kawat Helmholtz posisi sejajar. Kedua hasil model medan magnet dan kerapatan fluks magnet diproses menggunakan aplikasi Design Expert 11 untuk mendapatkan persamaan matematika sebagai persamaan pegangan untuk melakukan pengujian atau percobaan yang dilakukan secara berulang-ulang. Penelitian ini merupakan kajian awal untuk mendapatkan persamaan matematika yang berbentuk persamaan kuadratik sebagai kontribusi awal dalam percobaan Medan Magnet pada...

Green Computing Technologies and Computing Industry in 2021, 2021

Polymer Optical Fiber is opted as the most suitable medium for short haul communication system si... more Polymer Optical Fiber is opted as the most suitable medium for short haul communication system since it has lower cost and low loss for limited distance of transmission compared to glass fiber. This topic aims to show an alternative, green-technology based, economic and user-oriented communication passive device specifically a directional coupler by lapping tapered-fibers technique. This developed device is using designed geometrical blocks with integration of tapering effect, Dc, macro-bending, Rc, force exertion unto the coupling region, Fc, and etching lengths of the cores, Le to gain different splitting ratios, i.e., 50:50 and 90:10 experimentally by using the designed geometrical blocks with varied bending radii that affects the radiation of evanescent wave and to relate the integration of Couple Mode Theory and Hertz’s Law to obtain optimum coupling efficiency. The development may be an option to current device that are less user-friendly and fragile. This device is developed ...

journal of engineering science and technology, 2016

Macro-bending effect unto polymer optical fiber (POF) based splitters study is done to analyse th... more Macro-bending effect unto polymer optical fiber (POF) based splitters study is done to analyse the performance and characterizations using several bending radii of geometrical blocks that hold a customized prepared polymer fiber splitter. A pair of etched fibers with similar core diameters are attached to the ellipse-shaped blocks built using matching refractive index material where the blocks were built with various bending radii. The tapered fibers were lapped closely with some forces exerted upon them in order to stimulate the splitting of modes between the two fibers. This study is done by experimental set-up where each of the splitter ports is connected with optical power meter to measure the power output while pressure is exerted. Characterization is executed in order to investigate and analyse which bending radius gives the most optimize splitting ratio with considerable low loss for the particular splitter prepared. As for normal force of 0.3 lbF, the optimum splitting ratio...

Scientific Journal of PPI - UKM, 2016

ZnO material characterization was done to be used as optical probes from the plastic optical fibe... more ZnO material characterization was done to be used as optical probes from the plastic optical fiber. Characterization of ZnO materials by processing data obtained from scanning probe microscope (SPM) NTEGRA-AURA. The obtained data is in the form of images with different distance observations. It will be processed by 11 simulated images of proceeds image analysis (IA Analysis). Methodology of data processing is using average scanning Fast Fourier Transformation (ASFFT). This method consists of five characterization data processing techniques, i.e., power spectral density techniques, power spectral technique, magnitude spectrum technique, square root magnitude spectrum techniques and logarithmic spectrum techniques. The goal of average scanning FFT is determines a value of special characterization, because the result of surface morphology from SPM images cannot give exact information . Each techniques in this method will be used to see the details of each ZnO layer surface morphology o...

International Journal of Electrical and Computer Engineering (IJECE), 2020

In this paper, the simulation of Fiber Bragg Grating (FBG) as a temperature sensor is conducted. ... more In this paper, the simulation of Fiber Bragg Grating (FBG) as a temperature sensor is conducted. The FBG temperature sensor is designed based on Optical Frequency Domain Reflectometer (OFDR) concept. A continuous wave (CW) laser is used as the optical source and it is transmitted to two FBGs. The two FBGs reflection spectra will produce a beat frequency that can be detected using a Radio Frequency (RF) Spectrum Analyzer. Any temperature change will shift Bragg wavelength, thus produce a shift for the beat frequency. In this work, an FBG with temperature sensitivity 10 pm/˚C is employed. It is found that by using this technique, a high-resolution temperature sensor can be designed with temperature resolution of 0.1˚C.

2014 IEEE 2nd International Symposium on Telecommunication Technologies (ISTT), 2014

An experimental study of coupling characterization is performed where different thickness of fibe... more An experimental study of coupling characterization is performed where different thickness of fiber cores are paired in order to develop a directional splitter. An external pressure is exerted upon both the fibers to stimulate the transfer of energy between the first fiber to the second fiber. The aim is to analyze the optimum thickness of multimode polymer optical fiber core needed to develop an effective coupler/splitter. The study is done by experimental set-up using specified radius of circular blocks customized using matching refractive index material. Other aim is to provide a considerable explanation on the characteristics in splitting ratio, excess loss and insertion loss when different thickness of cores are used with the existence of load F.

An experimental study of coupling efficiency of a circular multimode fiber coupler dependency of ... more An experimental study of coupling efficiency of a circular multimode fiber coupler dependency of radiation from macro-bending is investigated on the basis of simplified coupled mode theory. The study is investigated by experimental set-up using various radii of circular blocks customized with matching refractive index material. The aim is to provide a considerable explanation on the differences in splitting ratio, excess loss and insertion loss when different bending radii due to radii of circular blocks is applied to the couplers. Other factors that contribute to the characterization of the coupler include fiber diameters and forces exerted upon the two fibers that lapped together forming the coupler developed. The technique used is proven to develop a low-cost coupler using mechanical lapping technique.

SPIE Proceedings, 2014

ABSTRACT The developed directional coupler using polymer optical fiber performance is studied ana... more ABSTRACT The developed directional coupler using polymer optical fiber performance is studied analytically where related theories are integrated and the outcomes are analyzed. Important theories such as simplified coupled mode theory and elliptical point contacts are integrated where the parameters such as coupling length, distance between the two fibers cores and forces are varied. Using simplified coupled mode theory, coupling coefficient and coupling efficiency is obtained based on the parameters of multimode fiber coupler such as the operating wavelength, numerical apertures, coupling length and diameter of the cores. The two fibers are initially tapered at certain length at most 20 mm and attached to geometrical blocks with certain radii and the middle tapered regions of the fibers are brought closed in proximity and they are lapped to each other. Investigation of different radii of the geometrical blocks represents the effect of macro-bending when the fibers are bent when attached to the circular blocks. This concept is used to transfer the modes from first fiber to the second. Then a particular amount of load force is exerted upon one side of the blocks so that the gap is closed and leads to increment of coupling length between the two fibers. The various load force amount will give different coupling lengths and distances between the two cores, thus leading to different coupling efficiencies. Analytically the expression that represents the coupling efficiency with force is an integrated expression from simplified coupled mode theory and Hertz’s Law of elliptical point contacts. Optimized coupling efficiency obtained is as high as 70% for this study.

Optical Fiber Communications and Devices, 2012

2013 European Intelligence and Security Informatics Conference, 2013

ABSTRACT

Current Developments in Optical Fiber Technology, 2013

Optik, 2014

A method for developing polymer optical fiber (POF) directional coupler is introduced where the i... more A method for developing polymer optical fiber (POF) directional coupler is introduced where the initial procedure is explained. The procedure of fabrication includes using chemical solvent to remove the cladding and exposed the core in order to align the unclad center of the fiber with another similar fiber to develop the coupler. Several experiments using different radii of circular blocks attached with the etched fibers are demonstrated to investigate the output power and losses of the developed coupler in order to build an efficient yet low-cost device. Instead of relying only on silica or glass fiber, POF now can be used as an alternative to improve the network performance in short distance communication system. The measurement parameters laid out offer great outcomes, however, the couplers intended to develop is yet to be realized where deeper research and various experiments are needed in order to develop a simple but optimum performance coupler that can be used for various applications.