Title :
Switchable-logic photonic switch array monolithically integrating MSMs, FETs, and MQW modulators
Author :
Nakahara, Tatsushi ; Matsuo, Shinji ; Amano, Chikara ; Kurokawa, Takashi
Author_Institution :
NTT Opto-Electron. Labs., Kanagawa, Japan
Abstract :
As a two-dimensional parallel digital processing device, we describe a switchable-logic photonic switch array that monolithically integrates metal-semiconductor-metal (MSM) photodetectors, field-effect-transistor (FET) amplifiers, and multiple-quantum-well (MQW) modulators. All-optical positive and negative logic operations are demonstrated with controllable thresholds and a 3-dB bandwidth of 300 MHz. In this device, the logic mode is switched by changing the bias voltage polarity of the MSM photodetector.<>
Keywords :
amplifiers; electro-optical modulation; electro-optical switches; field effect integrated circuits; field effect logic circuits; integrated optoelectronics; metal-semiconductor-metal structures; optical logic; photodetectors; semiconductor quantum wells; 2D parallel digital processing device; 300 MHz; FET amplifiers; FETs; MQW modulators; MSM photodetectors; MSMs; all-optical negative logic operations; all-optical positive logic operations; bias voltage polarity; controllable thresholds; field-effect-transistor amplifiers; logic mode; metal-semiconductor-metal photodetectors; monolithically integrating; multiple-quantum-well modulators; switchable-logic photonic switch array; FETs; Logic devices; Optical amplifiers; Optical arrays; Optical modulation; Photodetectors; Quantum well devices; Switches; Switching circuits; Voltage;
Journal_Title :
Photonics Technology Letters, IEEE
