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Applications of the integrated photonics in communication

دکتر رضا صفیان

Dr. Reza Safian received the B.Sc. degree in electrical engineering from the Isfahan University of Technology, Isfahan, Iran, in 1999, the M.A.Sc. degree in electrical engineering from McMaster University, Hamilton, ON, Canada, in 2003, and the Ph.D. degree in electrical engineering from the University of Toronto, Toronto, ON, Canada, in 2008.

From 1999 to 2002, he was an RF Design Engineer with the Electrical and Computer Engineering Research Center (ECERC), Isfahan University of Technology. In January 2008, he joined the faculty of the Isfahan University of Technology, where he is currently an Assistant Professor with the Electrical and Computer Engineering Department. His research interests are integrated photonics, microwave photonics, microwave circuits and imaging.

 

Applications of the integrated photonics in communication
مسئول برگزاری: رضا صفیان
محل: سمینار 3- دانشکده مهندسی برق و کامپیوتر / تاریخ: ۱۳۹۶-۱۲-۱۹ / زمان: ۲:۰۰ ب.ظ

Integrated photonics offers an attractive solution to the speed limitation of electronics. Silicon photonics is a technology platform for integrating passive and active optical devices. The ability to use existing CMOS-VLSI foundry processes to fabricate integrated optics enables large volume production at low costs while maintaining compatibility with electronic integrated circuits. With the recent explosion in network traffic, large data centers are demanding higher and higher intra-data center transmission speeds over distances of up to 20 km. For this application, optical interconnects are more energy efficient and are able to satisfy the bandwidth demands of the foreseeable future.

The fabrication techniques in integrated photonics are similar to those used in electronic integrated circuits in which photolithography is used to pattern wafers for etching and material deposition. Unlike electronics where the primary device is the transistor, there is no single dominant device. The range of devices required on a chip includes low loss interconnect waveguides, power splitters, optical amplifiers, optical modulators, filters, lasers and detectors.

Optical modulators are an essential component of communication links and immense research is dedicated to developing efficient high bitrate devices. It is desirable to have high bitrate transmission over a single channel because it simplifies multiplexing which can increase costs. In this talk I will talk about the history and the applications of the photonic integrated technology in the communication technology.  As an example of photonic integrated devices, I will talk about the electro-optic modulator (EOM). It is an optical device in which a signal-controlled element exhibiting the electro-optic effect is used to modulate a beam of light. The modulation may be imposed on the phase, frequency, amplitude, or polarization of the beam. Modulation bandwidths extending into the gigahertz range are possible with the use of laser-controlled modulators



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