User Requirements Specifications
Design and Development of Microfiber based Devices
(Microfiber Devices)
Telekom Research & Development Sdn. Bhd
TMR&D Innovation Centre , Lingkaran Teknokrat Timur,
63000 Cyberjaya, Selangor Darul Ehsan
Tel: 603-88839595 Fax: 603-88839599
Requirement Specification (URS)
ITNT/TMRNDRESEARCH/RS021/TP
Version 3.0
Prepared by:
Name : Siti Azlida Ibrahim
Post : Technical Leader
Date : 9/2/2015
Signature:
Reviewed by:
Name : Siti Azlida Ibrahim
Post : Project Manager
Date : 9/2/2015
Signature:
Name :
Post : Project Advisor
Date :
Signature:
Name :
Post : Theme Lead
Date :
Signature:
Approved by:
Name :
Post :
Date :
Signature:
Date : 24/10/13
Table of Contents
1.Introduction ............................................................................................................................ 3
1.1
1.2
1.3
Objective ................................................................................................................................. 3
Scope........................................................................................................................................ 3
Background ........................................................................................................................... 3
Section 2.
Functional Specifications .......................................................................... 4
Section 3.
Functional Specifications ......................Error! Bookmark not defined.
1.Introduction
1.1
Objective
The objectives of this project is:
To design and develop microfiber based optical devices (e.g filters,
wavelength converters, sensors, etc)
1.2 Scope
This document covers the user requirements specifications (URS) for Microfiber
Devices project. The end products of this project will be:
Prototype of optical microfiber devices (sensors, filters, wavelength converters)
1.3 Background
This project is a continuation of a previous project, “Design, Fabrication and
Characterization of Highly Nonlinear Long Silica Microfiber”. In the previous
project, long microfibers were successfully fabricated using the built taper
rig. This project is to develop optical devices using the fabricated
microfibers.
2. Functional Specifications
Microfiber is a fiber with smaller diameter that was fabricated by pulling the normal
optical fiber while heating up certain area of the fiber. This process produces a
microfiber, which is also known as tapered fiber as shown in Figure 1. The pulling
speed, temperature, etc will determine the waist diameter, waist length and
transition length. These are the research done in the previous project, where the
taper rig can be controlled to fabricate a microfiber with specific parameters.
Figure 1: Diagram of microfiber fabricated by heating and pulling a normal
optical fiber
In this project two groups of functional devices will be developed from the fabricated
microfibers, which are:
1. Nonlinear devices (wavelength converter ,filters)
2. Sensors (Gas sensors, liquid sensors)
Devices based on microfibers have few advantages as compared to conventional optical
fibers. They can be more efficient and have much smaller footprints. Light travelling in the
microfibers will experience high nonlinearity effect, which makes it suitable to be used for
nonlinear devices.
Examples of nonlinear devices are wavelength converter, and
wavelength filter. Development of microfiber based devices is in line with the direction
towards all-optical signal processing in the transmission system, which would eliminate
electronic bottle-neck in the future. Example of signal processing in all optical signal
regeneration is shown in Figure 2. All optical signal regenerator is shown in Figure 3.
Figure 2: All optical signal regeneration
Figure 3: All optical signal wavelength converter.
High evanescent field surrounding the microfibers will be exploited for sensor applications.
Figure 4 shows how microfiber can be used as sensor. By coating the fiber with a sensing
layer that is sensitive to a specific target analyte, the change in absorbance of the light is
used for sensing parameters. Fiber based sensor has many advantages as compared to
conventional electronics sensors including immunity to electromagnetic interference,
higher sensitivity, suitable for remote sensing and distributed sensing application.
Figure 4: Illustration of microfiber based sensor
3. Stakeholders
Key personal
1. Mr Izahar – custodian
2. Siti Azlida Ibrahim – Technical Lead
Researchers
1. Assoc. Prof. Dr Zulfadzli Yusoff
2. Prof. Dr. Hairul Azhar Abdul Rashid
3. Prof. Dr. Mohd. Ridzuan Mokhtar
4. Katrina D. Dambul
5. Dr. A.S.M. Mukter-uz- Zaman
Collaborators
1. Prof. Dr. Mohd. Adzir Mahdi – UPM
2. Dr. Mohd. Hanif Yaacob – UPM
3. Dr. Norizah Abdul Rahman - UPM
3. Project Schedule & Milestone