The IEEE-LEOS distinguished lecture series hosted five internationally renowned scientists. On May 19, 1998, Dr. Joachim H. Wolter, Professor of Experimental Physics at the University of Eindhoven, Eindhoven, Holland, presented a talk on “Low Dimensional Semiconductor Structures and their Applications in Electro-Optic Devices and Systems”. On September 15, 1998, Dr. Bahram Jalali, Associate Professor and Photonics Field Chair of Electrical Engineering at the University of California in Los Angeles, presented a talk on “Photonic Analog-To-Digital Conversion”. Dr. Jens Buus, from Gayton Photonics, England gave a lecture on December 7, with title “Semiconductor Lasers for WDM Systems”. For the Spring of 1999, Dr. Xi-Cheng Zhang from Rensselaer Polytechnic Institute presented a talk with title “Free Space THz Optoelectronics”, on March 18, 1999. On May 6, 1999, Dr. Pallab Bhattacharya from University of Michigan, will present a talk entitled “Quantum Well and Quantum Dot Lasers: From Strained Layer and Self-Organized Epitaxy to High-Performance Devices”.
Figure 1 Project test results.
In addition, the IEEE-LEOS Student chapter at UCF is currently working on an optical communication link system funded by IEEE-LEOS to demonstrate optical communication for high school students. Our designed optical link system can use two link methods, i.e., free space or optical fiber. A 5-mW laser diode operating at 640 nm is selected as a light source because its low optical power makes it safer for classroom demonstrations. In addition, at 640 nm wavelength, students can easily observe the propagation of light from the source to the receiver. The project test results are shown in Fig.1. Fig.1(a) shows the test for the laser diode, the laser diode driver, and the photodetector. The analog modulation test result is manifested in Fig.1(b)-(c) where a 1kHz sinusoidal signal from a signal generator is fed to the audio interfacing circuit (see Fig.1(b)). Fig.1(c) shows the received signal from the photodetector compared to the reference signal from the signal generator.
Free-space link-based optical communication demonstration setup.
Several free-space-based optical communication link shows have been performed since last February. They were well received by the UCF community during the 1999 UCF Engineering Expo and by high school students during their visit at CREOL. The following figures show the free-space-based optical communication link demonstration.
Project demonstration at the 1999 UCF Engineering Expo.
Project demonstration at CREOL.
Sarun Sumriddetchkajorn, IEEE-LEOS Student Member, President of the UCF IEEE-LEOS Student Chapter.
Nicholas Madamopoulos, I
EEE-LEOS Student Member.
Jason Schaefer,
CREOL Association of Optics Student.
Tolga Yilmaz,
IEEE-LEOS Student Member.
Fumiyo Yoshiono,
CREOL Association of Optics Student.
Adriana Galvan-Gonzalez,
IEEE-LEOS Student Member.
Steven Dunn,
CREOL Association of Optics Student.
Mohammed Al-Mumin,
IEEE-LEOS Student Member.
Xuesong Dong,
IEEE-LEOS Student Member.