HIGH-SPEED PIN-TRAVELING WAVE PHOTODETECTOR BASED ON A SEMICONDUCTOR OPTICAL AMPLIFIER LAYER STACK ON SEMI-INSULATING INP SUBSTRATE
Author(s) -
Mahmoud Nikoufard,
Fatemehsadat Tabatabaei,
S. N. Ghafouri
Publication year - 2012
Publication title -
progress in electromagnetics research c
Language(s) - English
Resource type - Journals
ISSN - 1937-8718
DOI - 10.2528/pierc12020503
Subject(s) - photodetector , stack (abstract data type) , layer (electronics) , optoelectronics , substrate (aquarium) , materials science , semiconductor , amplifier , nanotechnology , computer science , cmos , oceanography , geology , programming language
We present a pin-Traveling wave Photodetector (TWPD) on semi-insulating (SI) InP substrate at 1.55"m wavelength window with an electrical bandwidth of more than 120GHz, a line characteristic impedance of about 50›, and microwave index matched to the optical group index. The internal quantum e-ciency more than 99% for a 200"m long device is determined. The layer stack of the TWPD has previously utilized in a semiconductor optical amplifler (SOA). The TWPD can be monolithically integrated with passive and active components such as arrayed waveguide grating (AWG), Mach- Zehnder Interferometer (MZI), laser and modulator.
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