Dissertation > Excellent graduate degree dissertation topics show

Experimental Study on Chaotic DFB Laser Diodes Subject to Sliced Amplified Spontaneous Emission

Author: WangLong
Tutor: WangYunCai
School: Taiyuan University of Technology
Course: Optical Engineering
Keywords: laser optics semiconductor lasers chaos periodicity complexity entropy
CLC: TN248.4
Type: Master's thesis
Year: 2013
Downloads: 2
Quote: 0
Read: Download Dissertation

Abstract


Chaotic signal play an important role in privacy communication, chaotic lidar, high speed code generator and chaotic optical time domain reflection, as its high bandwidth, large amplitude and8-like autocorrelation performence. Chaotic signal can be easily generated by a laser subject to external perturbation. The commonly used way of perturbation are optical feedback, opto-electronic feedback and optical injection. Chaotic signal generated by optical feedback and opto-electronic feedback has weak periodicity, which have adverse impact on its practical application.chaotic signal without periodicity can be generated by optical injection, but it need severe condition in both injection intensity and injection wavelength, especially the polorization state of injection light. This make an obstacle in chaotic signal’s practical applications. Using sliced amplifier spontaneous emission as an external perturbation, distributed feedback semiconductor laser source will preduce chaotic signal has no periodicity and high complexity, allow larger injection parameters.This dissertation focus on the output of distributed semiconductor laser subject to sliced amplifier spontaneous emission injection, especially the chaotic state output, and the character of output. Detail are summarized as follows:1. The development of the chaos and chaotic laser have been induced. Main applications of chaotic laser has been introduced, and main approaches of generating chaotic signal by perturbance have been introduced briefly, providing contrasting basis for comparison different means of perturbance with sliced ASE injection.2. Experimental parameter and experimental result are detailed elaborated. We consisely anlysed the requirements of practical application and drawbacks of the exiting means of generate chaotic signal, elaborating the research goal and the significance. Specific research on the injection parameters of sliced ASE injection is described in this section. We compare the sliced ASE injection with the commonly used optical injection. The result indicates that the sliced ASE injection can make the DFB laser work in chaotic state in a larger parameter range.3. We analyze the characters of chaotic signal genertated by sliced ASE in periodicity, distribution of amplitude and complexity. Our research results show that perterbing the DFB laser by sliced ASE injection is able to generate chaotic signal have no periodicity, more symmetric distrbution and higher complexity.

Related Dissertations

  1. Numerical Simulation of Polarized Radiative Energy and Entropy Transfer,TK124
  2. Research of Irreversible Loss in Flow and Mexed Prosess,TK12
  3. Quantitative evaluation model based on information entropy of the classroom observation,G632.4
  4. Research on Removal Algorithm of Shadows in Image Segmentation,TP391.41
  5. Research on Feature Extraction and Classification of Doppler Ultrasonic Blood Flow Signals of Wrist Radial Artery,TP391.41
  6. Gao Zhong-ying academic thought and experience and use of Bufei Decoction treatment of common diseases of the respiratory system drug law,R249.2
  7. Research on synchronization control of chaotic systems,O415.5
  8. The Research on Evaluation Method of Highway Ecosystem Healthy,X826
  9. Based on complexity thinking of the School Management,G471
  10. DR Stinson \,TN918.1
  11. Computer-aided Hepatopathy Detection Based on MRI Perfusion Images,R445.2
  12. Study on Engineering Claim Risk Management Based on Matter Element,TU71
  13. Superfluid-Mott Insulator Phase Transition at Finite Temperature,O512
  14. Research on Supplier-Selection Based on Strategic Sourcing,F426.31
  15. Study on Synchronization of Time-delayed Chaotic System and Its Experimental Realized,O415.5
  16. Quantum Decoherence in Dissipative Cavity System,O413.1
  17. A Study of Multi-Path Routing Algorithm of Wireless Sensor Networks Based on Energy Balance,TP212.9
  18. Research on Some Dynamic Characteristics of Complex Rotor System,TH113
  19. Chaos Synchronization and Chaos Control of Permanent Magnet Synchronous Motor,TM301.2
  20. Study of CHIBOR Forecasting Model Based on Wavelet-Chaos Theory,F224
  21. Research on Reducing Electromagnetic Interference of Switching Mode Power Supply with Chaotic Methods,TN86

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Laser technology, the maser > Laser > Semiconductor lasers
© 2012 www.DissertationTopic.Net  Mobile