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Propagation of data-modulated Gaussian beams through holographic optical elements
Jing M Tsui1, Charles Thompson, Jeffrey M Roth
1Department of Electrical and Computer Engineering, University of Massachusetts-Lowell, Lowell, MA 01854, USA. jroth@ll.mit.edu
Optics Express
|April 1, 2009
Summary
This study shows how diffraction from holographic gratings causes dispersion, impacting optical communication signal fidelity. Larger diffraction angles and beam diameters worsen bit-error performance due to this temporal dispersion.
Area of Science:
- Optics and Photonics
- Optical Communications
Background:
- Holographic gratings are used in optical systems.
- Dispersion can degrade signal quality in optical communications.
Purpose of the Study:
- To examine dispersion from uniform volume holographic gratings.
- To assess the impact of this dispersion on optical signal fidelity.
Main Methods:
- Coupled-wave analysis was employed.
- A Gaussian beam illuminated the holographic grating.
- Temporal response to Gaussian pulses was calculated.
Main Results:
- Diffraction through holographic gratings causes temporal dispersion.
- Dispersion negatively affects bit-error performance.
- Increased diffraction angles and beam diameters lead to higher power penalties.
Conclusions:
- Temporal dispersion from holographic grating diffraction is a critical factor in optical communications.
- System design must account for dispersion to maintain signal integrity.
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