Quantum-Dot-Based Semiconductor Optical Amplifiers for O-Band Optical Communication

1. Front Matter

   Pages i-xxiii

   PDF

2. Preamble

   • Holger Schmeckebier

   Pages 1-11

3. Introduction to Semiconductor Optical Amplifiers (SOAs)

   • Holger Schmeckebier

   Pages 13-34

4. Samples and Characterization

   • Holger Schmeckebier

   Pages 35-73

5. Introduction to System Experiments

   • Holger Schmeckebier

   Pages 75-91

6. Concept of Direct Phase Modulation

   • Holger Schmeckebier

   Pages 93-100

7. Signal Amplification

   • Holger Schmeckebier

   Pages 101-123

8. Concept of Dual-Band Amplifiers

   • Holger Schmeckebier

   Pages 125-144

9. Signal Processing—Wavelength Conversion

   • Holger Schmeckebier

   Pages 145-173

10. Summary and Outlook

    • Holger Schmeckebier

    Pages 175-180

11. Back Matter

    Pages 181-190

    PDF

This thesis examines the unique properties of gallium arsenide (GaAs)-based quantum-dot semiconductor optical amplifiers for optical communication networks, introducing readers to their fundamentals, basic parameters and manifold applications. The static and dynamic properties of these amplifiers are discussed extensively in comparison to conventional, non quantum-dot based amplifiers, and their unique advantages are elaborated on, such as the fast carrier dynamics and the decoupling of gain and phase dynamics.
 
In addition to diverse amplification scenarios involving single and multiple high symbol rate amplitude and phase-coded data signals, wide-range wavelength conversion as a key functionality for optical signal processing is investigated and discussed in detail. Furthermore, two novel device concepts are developed and demonstrated that have the potential to significantly simplify network architectures, reducing the investment and maintenance costs as well as the energy consumption of future networks.
 

• Semiconductor Optical Amplifier
• Quantum Dot Optical Amplifier
• Four-Wave Mixing
• Wavelength Conversion
• On-Off Keying
• Differential Quadrature Phase Shift Keying DQPSK
• Signal Generation and Processing
• Pump-Probe Measurement

• Institute of Solid State Physics, Technical University of Berlin, Berlin, Germany

  Holger Schmeckebier

Holger Schmeckebier obtained his Diploma degree in physics in 2009 from the Technical University of Berlin, having worked on mode-locked lasers for optical communication applications. He received his Dr. rer. nat. in 2016 from the TU Berlin. His scientific interest is in the area of static and dynamic characterization of semiconductor edge and surface emitters, linear and nonlinear applications of semiconductor optical amplifiers as well as optical communication experiments at high symbol rates.

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