Use this URL to cite or link to this record in EThOS:
Title: Versatile high resolution dispersion measurements in semiconductor photonic nanostructures using ultrashort pulses
Author: Bell, Matthew Richard
ISNI:       0000 0004 2716 1277
Awarding Body: University of St Andrews
Current Institution: University of St Andrews
Date of Award: 2007
Availability of Full Text:
Access from EThOS:
Access from Institution:
This thesis describes the process of developing a robust phase measurement technique with which to analyse semiconductor based devices intended for use in optoelectronic/all optical networks. The devices measured are prospective dispersion compensators, based either on planar photonic crystal waveguides or coupled microcavities connected by ridge waveguide. The technique was validated by measuring the phase transfer function of a Fabry Perot etalon. This demonstrated that even when detecting low optical powers (sub μW), accurate measurement of phase could quickly be carried out over a significant spectral range (~10nm). Comparison of experimental data taken from the prospective dispersion compensators with theory showed excellent agreement, which provided qualitative (cavity spacing and reflectivity) and quantitative (loss) measures of device performance. The phase measurement technique has been designed to be capable of measuring other classes of device also, including active devices such as semiconductor optical amplifiers. This suggests the phase measurement technique may be valuable in analysing the variation of dispersion as a function of applied bias, peak power or temperature for a variety of devices.
Supervisor: Miller, Alan Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Ultrashort ; Optical pulses ; Dispersion ; Photonic ; QC689.5L37B4 ; Laser pulses ; Ultrashort ; Dispersion--Measurement ; Semiconductor lasers ; Optoelectronic devices