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About Research 🧪
Our research covers optical fibers, nanophotonics and metamaterials, and photonics systems, circuits and sensors. We have helped to develop critical technologies including the optical fibers and amplifiers that power the Internet, and the fiber lasers that are used in applications such as medicine, defense, renewable energy and manufacturing.
Research Areas
Research Areas
Ultrafast fiber laser
Ultrafast fiber laser
Ultrafast optics is the part of optics dealing with ultrafast phenomena, i.e. phenomena which occur on a time scale of picoseconds or less. Typically, ultrafast optics experiments involve ultrashort pulses as generated with mode-locked lasers (→ ultrafast laser physics).
As ultrafast phenomena are too fast to be directly monitored with electronics, optical techniques, such as pump–probe measurements, are required. With such techniques, phenomena occurring on time scales of picoseconds or femtoseconds can be monitored. Examples of such phenomena are femtosecond dynamics of electrons (particularly in solids, e.g. in semiconductor devices such as SESAMs), light-induced phase changes (e.g. melting or vaporization of metals), chemical reactions, and processes in plasmas.
Optical Fiber Sensor
Optical Fiber Sensor
Fiber-optic sensors (also called optical fiber sensors) are fiber-based optical sensors for some quantity, typically temperature or mechanical strain, but sometimes also displacements, vibrations, pressure, acceleration, rotations (measured with optical gyroscopes based on the Sagnac effect), or concentrations of chemical species. The general principle of such devices is that light from a laser (often a single-frequency fiber laser) or from a superluminescent source is sent through an optical fiber, experiences subtle changes of its parameters either in the fiber or in one or several fiber Bragg gratings, and then reaches a detector arrangement which measures these changes.
Projects 📂
Projects 📂
Mode-Lock Optical Fiber Laser Using CNT
Mode-Lock Optical Fiber Laser Using CNT
Carbon nanotube (CNT) saturable absorbers (SA)
Strain Optical Sensor
Strain Optical Sensor
Strain optical sensor Using Fiber Bragg Grating (FBG)
Collaborations 🤝🏻
Collaborations 🤝🏻
PRC UM
PHOTONICS RESEARCH CENTRE, UNIVERSITY OF MALAYA (PRCUM)
WiPNET
WIRELESS AND PHOTONIC NETWORKS,FACULTY OF ENGINEERING, UPM
Facilities 🔬
Facilities 🔬
Optical spectrum analyser (OSA)
An Optical Spectrum Analyser (or OSA) is a precision instrument designed to measure and display the distribution of power of an optical source over a specified wavelength span. An optical analyzer spectrum trace displays power in the vertical scale and the wavelength in the horizontal scale
Oscilloscope
An oscilloscope is a type of electronic test instrument that graphically displays varying electrical voltages as a two-dimensional plot of one or more signals as a function of time. The main purposes are to display repetitive or single waveforms on the screen that would otherwise occur too briefly to be perceived by the human eye. The displayed waveform can then be analyzed for properties such as amplitude, frequency, rise time, time interval, distortion, and others.
Radio frequency spectrum analyser
An radio frequency (RF) spectrum analyzer is the instrument of choice for detecting and identifying sources of RF interference and monitoring the health of a wireless system. An RF spectrum analyzer measures the raw RF energy of transmitted radio frequency signals and aids the user by providing a view into the local RF environment.
Laser diode controller
Laser diode controllers or drivers are specifically designed to drive a laser diode by providing a current instead of a voltage to the laser diode. Laser diode drivers are sometimes also referred to as current drivers, current controllers or laser diode controllers and the names are used almost interchangeably. All laser diodes, also called diode lasers or semiconductor lasers, require a laser diode driver to operate.
Optical power meter
An optical power meter (OPM) is a device used to measure the power in an optical signal. The term usually refers to a device for testing average power in fiber optic systems. Other general purpose light power measuring devices are usually called radiometers, photometers, laser power meters (can be photodiode sensors or thermopile laser sensors), light meters or lux meters
Autocorrelator
Optical autocorrelators are used for various purposes, in particular for the detailed analysis of light, in particular for the measurement of the duration of ultrashort pulses with picosecond or femtosecond durations, where an electronic apparatus (based on, e.g., a photodiode) would be too slow.
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