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Mr Osmar Couto

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Staff Member Details
Telephone: +61 8 6304 5207
Mobile: 0430 184 425
Campus: Joondalup  
Room: JO23.308  

Overview of thesis

Physical Layer Security using Optical Steganography and Encoding Techniques in Optical Networks

Security measures in computer networks have demanded diverse solutions in different scenarios, which range from protocols to applications using hardware and/or software. This research will combine two separate disciplines: optical networks and cyber security. This combination will improve data transmission security within optical networks by applying techniques used within cyber security fields, such as encoding and steganography.

Physical layer security applying optical signal processing in fibre optic networks has been researched over recent decades to preserve data transmission confidentiality and privacy. Researchers have proposed encoding techniques, such as Optical Code-Division Multiple Access (OCDMA), and encryption techniques, such as Logical Gates (XOR, AND, NAND) to be applied to the data before transmission; both use keys/codes to create a unique encoding/encrypting pattern.  Also, different techniques have been assessed for distributing these keys/codes. Further, the optical steganography is used to conceal the data transmission in a host signal.

In this Master’s thesis optical delay encoding base optical steganography will be experimented and simulated to determine if a stealth signal can be hidden during a data transmission in the fibre optic networks. This project is a collaboration between the ECU’s Security Research Institute (SRI) and the Electron Science Research Institute (ESRI). Also, the experiment will be carried out in the ESRI’s photonic labs.


  • Master of Science – Computer Science (Cyber Security)    In Progress
  • Certificate IV in Information Technology                                   2004
  • MBA in Telecommunications                                                 2002
  • Postgraduate Diploma in Computer Network                           1996
  • BEng Electrical and Electronic Engineering                             1992
  • Advanced Diploma in Telecommunications                              1990
  • Advanced Diploma in Electrotechnology                                  1983


  • Fibre optic networks where encoding and encryption techniques can be applied to make data transmission safer, using all-optical signalling processing circuits;
  • Software-defined networking (SDN) where infrastructure can be deployed and monitored in a virtual environment. Also, the forensics techniques applied in this environment; and
  • Named Data Networking (NDN) which implements a new concept of routing packages, not using IP addresses anymore. Instead, it uses the name as source and destination addresses. It will change the way that networking is designed.

Other work

  • Oct 2016 – Feb 2017 (Part-time) - Senior Comms Engineer – Emtek Pty Ltd - Perth/WA
  • Oct 2013  – Jan 2015 - Lead Comms Engineer - Pilbara EPCM (JV URS / Lycopodium) – Perth/WA
  • Aug 2012 – Sep 2013 - Snr. Comms Engineer - Pilbara EPCM (JV URS / Lycopodium) – Perth/WA
  • Apr 2012 – Jun 2012 - Snr. Comms Engineer - GHD EPCM Pty Ltd – Perth/WA
  • Sep 2011 – Apr 2012 - Snr. Systems and Comms Eng. - Parsons Brinckerhoff – Perth/WA
  • Jul 2011 - Sep 2011 - EIC Design Engineer - Mulsan Engineering – Perth/WA
  • Sep 2009 – Jul 2011 - Snr. Technical Officer – AECOM – Perth/WA

Past Teaching

  • Jan 1997 – Dec 1997 – Lecturer - Ferlagos University – Brazil
  • Jan 1997 – Dec 1999 – Teacher - Grupo de Ensino Apogeu – Brazil



Mr Osmar Couto
Masters by Research Candidate
ECU Security Research Institute
School of Science
Phone: (08) 6304 5207
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