Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 7 of 7 for “"Advanced modulation formats"”.
-
Numerical modelling of advanced modulation formats and WDM transmission
… theoretical investigation of the application of advanced modelling formats in high-speed fibre lightwave systems. The first part of this work focuses on numerical optimisation of dense wavelength division multiplexing (DWDM) system design. We employ advanced spectral domain filtering techniques …
-
High dimensionality carrierless amplitude phase modulation technique for radio over fiber system
Advanced modulation formats such as carrierless amplitude phase (CAP) modulation technique is one of the solutions to increase flexibility and high bit rates to support multi-level and multi-dimensional modulations with the absence of sinusoidal carrier. Recent work are focussing on the 2D CAP-64 …
-
Regrowth-free monolithic vertical integration of passive and active waveguides
… is reaching its limit. Spectrally efficient advanced modulation formats are being used to increase the data rate within the existing bandwidth. Mach-Zehnder Modulators achieve high spectral density by modulating both the phase and amplitude of light. At the moment, laser light sources and …
-
Polymer waveguide based optical interconnects for high-speed on-board communications
… can be achieved for a MMF launch. On this basis, advanced modulation formats are investigated across the board-level waveguide links for further increasing the on-board data rates. Record NRZ-based 40 Gb/s and 56 Gb/s PAM-4 based data transmission over a 1 m long multimode polymer spiral waveguide …
-
All-semiconductor High Power Mode-locked Laser System
… synchronization and its application in advanced optical communications have been investigated in this dissertation. Dynamics of all-optical timing synchronization (clock recovery) using multi-section gain-coupled distributed-feedback (MS-GC DFB) lasers are discussed. A record speed of …
-
Οπτικά τηλεπικοινωνιακά συστήματα διασύνδεσης υψηλής φασματικής απόδοσης με πολυπλεξία μήκους κύματος και προηγμένες τεχνικές διαμόρφωσης
Οι απαιτήσεις των δικτύων διασύνδεσης, στα υπολογιστικά συστήματα υψηλής απόδοσης, αυξάνονται με αλματώδη ρυθμό τόσο σε χωρητικότητα, όσο και σε ρυθμούς σηματοδοσίας που πρέπει να εξυπηρετηθούν. Αυτή η αύξηση των ρυθμών σηματοδοσίας επιβάλλει την αντικατάσταση των ηλεκτρικών διακοπτών που …
-
Digital equalization techniques for the compensation of nonlinear impairments in long-haul coherent optical communication systems
… to the state-of-the-art binary intensity-modulation direct-detection receivers. A precursor to this development was the introduction in the early 2000 of differential phase shift keying in conjunction with a direct-detection using a delay interferometer. The advantages of latter modulation …