RT Generic
T1 VCSEL based optical-fiber Interrogation design for sensing in CubeSats
A1 Ansia Dibuja, Daniel
AB For this Bachelor’s thesis, a compact and independent system for performing tunablelaser diode spectroscopy in a CubeSat nanosatellite has been designed. The system ismodulated in alternating current and works tuning a vertical-cavity surface-emitting laserand using both electromagnetic absorption and dispersion for the purpose of measuringon the device under test, which would be a gas cell or a fiber sensor.Specific design principles were applied to this project, namely, power efficiency, compliancewith the ROHS rules, optimization of its size, COTS usage, AC modulation, singlesupply as well as the CubeSat specifications. This thesis is under the umbrella of theNANOSTAR Project.The system designed can be tuned within a range of 9 nm and automatically calibrateits emission wavelength through the usage of an HCN reference cell. It is able to performa full-range sweep or tune specific wavelengths for a fast measurement.This project includes the characterization, design and simulation of the system composedby photonic, electronic and optoelectronic components. Its implementation includesthe design and assembly of a prototype as well as its control software and resolutionand error calculations. The prototype is completely autonomous and only requiresa DC power supply in order to recharge its batteries as well as communication with itscontroller board.
YR 2021
FD 2021-03-02
LK https://hdl.handle.net/10016/37274
UL https://hdl.handle.net/10016/37274
LA eng
DS e-Archivo
RD 17 jul. 2024