Strong Optical Injection Locking of Edge-Emitting Lasers and Its Applications by Hyuk-Kee Sung Doctor of Philosophy in Engineering Electrical Engineering and Computer Sciences University of California, Berkeley Professor Ming C. Wu, Chair Semiconductor lasers are essential components that enable high-speed long-haul communication and have been widely used for various applications in photonics t...

We propose a theoretical model to describe external-cavity distributed feedback semiconductor lasers and investigate the impact of number external points on linewidth side-mode suppression ratio through numerical simulation. The simulation results demonstrate that can be reduced by increasing cavity length ratio, adding more further narrow enhance side mode ratio. This research provides insight...

We demonstrate new optical techniques for externally controlling the latchable output power of a semiconductor-optical-amplifier-based flip-flop. Optical 'set' and 'reset' signals increase and decrease the re-fractive index, respectively, via cross-phase modulation (XPM). Set signals, which deplete the carrier density, have wavelengths between 1533 and 1568 nm, and powers as low as 22 microW. R...

By using two main effects of cross-gain modulation and cross-phase modulation in semiconductor optical amplifier-based devices, many logic functions of logic AND, OR, XOR, NOR and XNOR are successfully demonstrated. Also, complex systems including all-optical half and full adders in a combination of multiple logic functions are successfully demonstrated. These functions will provide not only in...

In this paper a new method for the design of a linear phase distributed amplifier in 180nm CMOS technology is presented. The method is based on analogy between transversal filters and distributed amplifiers topologies. In the proposed method the linearity of the phase at frequency range of 0-50 GHz is obtained by using proper weighting factors for each gain stage in cascaded amplifier topology....