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Center for Astrophysics Research and Technologies Seminar Series Information


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Strongly Injection-Locked Semiconductor Ring Lasers for a New Generation of Ultrafast Transmitters

Thursday August 31, 2017
11:00 am

 Presenter:  Dr. Marek OsiƄski, Professor, Electrical and Computer Engineering & Physics and Astronomy
 Series:  OSE Seminars
 Abstract:  Optical injection locking has been actively researched for its potential to improve ultrahigh frequency performance of semiconductor lasers for both digital and analog applications. We have proposed a new injection-locking scheme, based on unidirectional whistlegeometry ring lasers (WRLs) monolithically integrated with distributed Bragg reflector (DBR) laser masters. Numerical analysis of the modulation response of a single injection-locked WRL shows a very significant reduction in the modulation efficiency between low frequency and the resonance frequency (low-frequency roll-off), which severely limits the achievable 3-dB modulation bandwidth. By combining advantages of strong injection locking (to dramatically enhance the resonance frequency) and cascaded arrangement of WRLs (to eliminate the low-frequency roll-off in modulation response), a new class of high-performance, small-size, low-cost, ultrafast, easy-to-use (over 100 GHz) functional chips is expected to emerge.
 Location:  Room 103, Center for High Tech Materials

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