Commenced in January 2007
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Multiple-Channel Piezoelectric Actuated Tunable Optical Filter for WDM Application
Authors: Hailu Dessalegn, T. Srinivas
Abstract:
We propose new multiple-channel piezoelectric (PZT) actuated tunable optical filter based on racetrack multi-ring resonators for wavelength de-multiplexing network applications. We design tunable eight-channel wavelength de-multiplexer consisting of eight cascaded PZT actuated tunable multi-ring resonator filter with a channel spacing of 1.6nm. The filter for each channel is basically structured on a suspended beam, sandwiched with piezoelectric material and built in integrated ring resonators which are placed on the middle of the beam to gain uniform stress and linearly varying longitudinal strain. A reference single mode serially coupled multi stage racetrack ring resonator with the same radii and coupling length is designed with a line width of 0.8974nm with a flat top pass band at 1dB of 0.5205nm and free spectral range of about 14.9nm. In each channel, a small change in the perimeter of the rings is introduced to establish the shift in resonance wavelength as per the defined channel spacing. As a result, when a DC voltage is applied, the beams will elongate, which involves mechanical deformation of the ring resonators that induces a stress and a strain, which brings a change in refractive index and perimeter of the rings leading to change in the output spectrum shift providing the tunability of central wavelength in each channel. Simultaneous wave length shift as high as 45.54pm/Keywords: Optical MEMS, piezoelectric (PZT) actuation, tunable optical filter, wavelength de-multiplexer.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1106671
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[1] D. C. Kilper, R. Bach, D. J. Blumenthal, D. Einstein, T. Landolsi, et al., “Optical Performance Monitoring” Journal of Light wave Technology, Vol. 22, NO. 1, pp. 294–304, January 2004.
[2] Wim Bogaerts*, Peter De Heyn, Thomas Van Vaerenbergh, Katrien De Vos, Shankar Kumar Selvaraja, et al., “Silicon microring resonators,” Laser Photonics Rev. 6, No. 1, pp. 47–73, 2012.
[3] B D Timotijevic, F Y Gardes, W R Headley, G T Reed, M J Paniccia, et al., “Multi-stage Racetrack Resonator Filters in Silicon-on-Insulator”, Journal of Optics A: Pure and Applied Optics 8(2006) S473-S476.
[4] Shijun Xiao, Maroof H. Khan, Hao Shen and Minghao Qi, “Multiple- Channel Silicon Micro-resonator based Filter for WDM Applications”, Vol. 15, No. 12 Optical Society of America, 2007
[5] Fenfei Liu and Mani Hossein-Zadeh, “On the Performance of High-Q Multiring Optical Filters”, IEEE Photonics Journal, 2010.
[6] Jin Yao, Ming-Chang M. Lee, David Leuenberger and Ming C. Wu, “Wavelength- and Bandwidth-Tunable Filters Based on MEMS-actuated Microdisk Resonators”, Optical Society of America, 2005.
[7] Tarek Mamdouh and Diaa Khalil, “A MEMS Tunable Optical Ring Resonator Filter”, Optical and Quantum Electronics, 37:835–853, 2005.
[8] Dooyoung Hah, John Bordelon, and Dan Zhang, “Mechanically Tunable Optical Filters with a Microring Resonator”, Optical Society of America, 2011.
[9] Jun Rong Ong, Ranjeet Kumar, and Shayan Mookherjea, “Ultra-High- Contrast and Tunable-Bandwidth Filter Using Cascaded High-Order Silicon Microring Filters”, IEEE Photonics Technology Letters, Vol. 25, No. 16, 2013.