BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Australia/Sydney BEGIN:DAYLIGHT DTSTART:20191006T030000 TZOFFSETFROM:+1000 TZOFFSETTO:+1100 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=10 TZNAME:AEDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20190407T020000 TZOFFSETFROM:+1100 TZOFFSETTO:+1000 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=4 TZNAME:AEST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20190507T054605Z UID:B93585E0-4C69-4462-8C72-683EFC1C0A16 DTSTART;TZID=Australia/Sydney:20190503T150000 DTEND;TZID=Australia/Sydney:20190503T160000 DESCRIPTION:Terahertz (THz) waves\, which represent the frequency region be tween radio and light waves from 0.1 THz to 10 THz\, have attracted consid erable attention in the interdisciplinary field of electronics and photoni cs. Their unique potential applications\, such as in ultra-broadband wirel ess communication\, spectroscopic sensing\, and non-destructive imaging\, are now being developed. However\, most existing THz application systems a re composed of bulky\, discrete and large-power-consumption elements based on photoelectric conversion\, hollow waveguides and/or optical components . For the key device in an integrated THz system\, we focus on resonant tu nneling diodes (RTDs) with semiconductor quantum structures as compact and energy-efficient THz source and detector. The RTD oscillator can generate directly coherent THz waves at room temperature\, and an oscillation freq uency of approximately 2 THz has been reported. Highly sensitive RTD detec tors have been realized by exploiting the strong nonlinear current-voltage characteristics of RTDs. In addition\, the integrated platform to manipul ate the THz waves in a thin\, planar\, self-supporting and low-loss struct ure is indispensable toward the practical use of THz waves in various fiel ds. We focus on a silicon photonic-crystal slab\, which enables low-loss c onfinement of THz waves using periodic dielectric microstructures by photo nic bandgap and total internal reflection. An extremely low-loss (< 0.1 dB /cm) THz waveguide\, a high-Q (> 10\,000) cavity\, a compact diplexer\, an d all-dielectric antenna have been developed. In this seminar\, the author will present the recent progress of THz devices and systems based on phot onic crystals\, RTDs and their integration\, which enable compact\, low-po wer consumption\, and integrated systems.\n\nCo-sponsored by: School of El ectrical Engineering and Telecommunication\, UNSW\n\nSpeaker(s): Masayuki Fujita\, \n\nRoom: Room 102 \, Bldg: EE&T Building (G17)\, School of Elect rical Engineering and Telecommunication\, Kensington\, New South Wales\, A ustralia\, 2052 LOCATION:Room: Room 102 \, Bldg: EE&T Building (G17)\, School of Electrical Engineering and Telecommunication\, Kensington\, New South Wales\, Austra lia\, 2052 ORGANIZER:s.atakaramians@unsw.edu.au SEQUENCE:1 SUMMARY:Technical Seminar: Advanced terahertz device and system based on re sonant tunneling diode and photonic crystal URL;VALUE=URI:https://events.vtools.ieee.org/m/197854 X-ALT-DESC:Description: <br /><p>Terahertz (THz) waves\, which represent th e frequency region between radio and light waves from 0.1 THz to 10 THz\, have attracted considerable attention in the interdisciplinary field of el ectronics and photonics. Their unique potential applications\, such as in ultra-broadband wireless communication\, spectroscopic sensing\, and non-d estructive imaging\, are now being developed. However\, most existing THz application systems are composed of bulky\, discrete and large-power-consu mption elements based on photoelectric conversion\, hollow waveguides and/ or optical components. For the key device in an integrated THz system\, we focus on resonant tunneling diodes (RTDs) with semiconductor quantum stru ctures as compact and energy-efficient THz source and detector. The RTD os cillator can generate directly coherent THz waves at room temperature\, an d an oscillation frequency of approximately 2 THz has been reported. Highl y sensitive RTD detectors have been realized by exploiting the strong nonl inear current-voltage characteristics of RTDs. In addition\, the integrate d platform to manipulate the THz waves in a thin\, planar\, self-supportin g and low-loss structure is indispensable toward the practical use of THz waves in various fields. We focus on a silicon photonic-crystal slab\, whi ch enables low-loss confinement of THz waves using periodic dielectric mic rostructures by photonic bandgap and total internal reflection. An extreme ly low-loss (&lt\; 0.1 dB/cm) THz waveguide\, a high-Q (&gt\; 10\,000) cav ity\, a compact diplexer\, and all-dielectric antenna have been developed. In this seminar\, the author will present the recent progress of THz devi ces and systems based on photonic crystals\, RTDs and their integration\, which enable compact\, low-power consumption\, and integrated systems.</p> END:VEVENT END:VCALENDAR