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Mode-resolved Fabry-Perot experiment in low-loss Bragg-reflection waveguides.
Optics Express
|February 3, 2016
Summary
Semiconductor Bragg-reflection waveguides offer a versatile platform for quantum optics. Researchers characterized these waveguides, revealing lower losses and enabling precise control over spatial modes for advanced applications.
Area of Science:
- Non-linear optics
- Quantum optics
- Semiconductor device physics
Background:
- Semiconductor Bragg-reflection waveguides (BRWs) are crucial for non-linear optics.
- Controlling spatial modes in BRWs is essential for quantum optical functionalities.
- Existing characterization methods may not fully capture the properties of these complex waveguides.
Purpose of the Study:
- To develop and apply an efficient broadband spectral method for characterizing dispersive multimode semiconductor waveguides.
- To gain direct experimental access to the relevant spatial modes within BRWs.
- To determine the group velocities and loss coefficients of these waveguides.
Main Methods:
- Extension of the Fabry-Perot technique for linear optical characterization.
- Broadband spectral analysis of semiconductor Bragg-reflection waveguides.
- Experimental determination of spatial mode properties, including group velocities and loss.
Main Results:
- Detailed linear optical characterization of dispersive multimode semiconductor waveguides was achieved.
- Direct experimental access to relevant spatial modes and their group velocities was obtained.
- Lower than expected loss coefficients were measured for the waveguides.
Conclusions:
- The developed Fabry-Perot based method provides efficient characterization of BRWs.
- The low loss coefficients indicate suitability for integrated quantum optics.
- Precise control over spatial modes is achievable, paving the way for advanced quantum applications.
