Low-Loss Polarization-Insensitive Silicon-on-Insulator-Based WDM Filter for Triplexer Applications
- 31 October 2008
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 20 (23) , 1968-1970
- https://doi.org/10.1109/lpt.2008.2005587
Abstract
We have designed and fabricated a low-loss polarization-insensitive silicon-on-insulator-based photonic integrated circuit wavelength-division-multiplexing transceiver filter for triplexer applications. The filter is realized by two-stage Fourier-transform-based Mach-Zehnder interferometers to handle the uploading of 1.3-mum data stream and the demultiplexing of 1.49-mum/1.55-mum channels for downstream traffics, respectively. The fabricated filter has less than 0.2-dB ripple over 20-nm flat passband for downstream channels and more than 100-nm bandwidth for the upstream channel. The excess loss of the filter is less than 0.35 dB with less than 0.1-dB polarization-dependent loss.Keywords
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