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Published on: August 12, 2013
Design optimization of flattop interleaver and its dispersion compensation
1Department of Physics and Computer Science, Wilfrid Laurier University, Waterloo N2L 3C5, Canada. lwei@wlu.ca
Optics Express
|June 24, 2009
Summary
This study introduces an optimization strategy for flattop optical interleavers using multi-cavity Gire-Tournois etalons (MC-GTE) to enhance spectral performance and compensate for dispersion. The method allows tailored optical performance by adjusting design parameters.
Area of Science:
- Photonics and Optical Engineering
- Optical Communication Systems
- Interleaver Design
Background:
- Optical interleavers are crucial components in wavelength-division multiplexing (WDM) systems.
- Existing interleaver designs may suffer from spectral ripple and chromatic dispersion, limiting performance.
- Multi-cavity Gire-Tournois etalons (MC-GTE) offer potential for improved spectral shaping.
Purpose of the Study:
- To present a general design optimization strategy for flattop interleavers.
- To incorporate dispersion compensation for enhanced optical performance.
- To analyze and illustrate the optimization for specific interleaver configurations (mn-GTE).
Main Methods:
- Exploiting the general flattop condition and ripple equalization techniques.
- Deriving analytical expressions for flattop conditions, peak/trough positions, group delays, and chromatic dispersions.
- Utilizing an additional MC-GTE as a dispersion compensator.
Main Results:
- The proposed optimization strategy significantly improves spectral performance of mn-GTE interleavers.
- Optimal performance is controllable via reflection coefficients and cavity parameters (m, n).
- Dispersion compensation is achieved, and dispersion/bandwidth can be enhanced by increasing cavity numbers.
Conclusions:
- The developed optimization strategy enables superior spectral performance and dispersion control for flattop interleavers.
- The use of MC-GTEs as dispersion compensators is effective for low-dispersion interleaver design.
- This approach offers a pathway to tailored optical performance in advanced communication systems.
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