On the performance of advanced integrated microring filters for switching applications in next-generation elastic optical networks

We investigate the use of integrated advanced microring resonator-based sum-difference all-pass optical filters for switching applications in circuit-switched elastic optical networks. A practical design taking into account optical losses accordingly to typical reported values for strip waveguides in silicon-on-insulator technology is considered. By incorporating tuning elements (i.e., standard phase shifters), three different synthetized elliptic filters are emulated in the same physical structure showing the potential in terms of bandwidth configurability of the architecture. Practical filter design rules for standard silicon-on-insulator single-mode strip waveguides are also discussed. Beside possible advantages in terms of reduced fabrication costs, simulations performed on Nyquist PM-QPSK signals with different channel capacities over 50, 37.5 and 25 GHz frequency slots suggest that the proposed structure can achieve similar or better performance than commercial spectrum selective switch filters.

[1]  Hermann A. Haus,et al.  Polarization splitting and rotating through adiabatic transitions , 2003 .

[2]  Dimitra Simeonidou,et al.  Next generation elastic optical networks: The vision of the European research project IDEALIST , 2015, IEEE Communications Magazine.

[3]  Wesley D. Sacher,et al.  Improving the dimensional tolerance of microrings with adiabatically widened bends , 2013, CLEO: 2013.

[4]  S. Tibuleac,et al.  N-degree ROADM architecture comparison: Broadcast-and-select versus route-and-select in 120 Gb/s DP-QPSK transmission systems , 2014, OFC 2014.

[5]  Chao Li,et al.  Silicon polarization diversity optical tunable filter circuits with fiber assembly , 2011, 2011 International Topical Meeting on Microwave Photonics jointly held with the 2011 Asia-Pacific Microwave Photonics Conference.

[6]  Simon Poole,et al.  Spectral modeling of channel band shapes in wavelength selective switches. , 2011, Optics express.

[7]  Jian H. Zhao,et al.  Optical Filter Design and Analysis: A Signal Processing Approach , 1999 .

[8]  Andrea Bianco,et al.  On the design of microring resonator devices for switching applications in flexible-grid networks , 2014, 2014 IEEE International Conference on Communications (ICC).

[9]  H. Haus,et al.  Microring resonator channel dropping filters , 1997 .

[10]  Marc Sorel,et al.  Tunable silicon photonics directional coupler driven by a transverse temperature gradient. , 2013, Optics letters.

[11]  Maxim Kuschnerov,et al.  On the Mitigation of Optical Filtering Penalties Originating From ROADM Cascade , 2014, IEEE Photonics Technology Letters.

[12]  P. Poggiolini,et al.  On the Performance of Nyquist-WDM Terabit Superchannels Based on PM-BPSK, PM-QPSK, PM-8QAM or PM-16QAM Subcarriers , 2011, Journal of Lightwave Technology.

[13]  Michal Lipson,et al.  High bandwidth on-chip silicon photonic interleaver. , 2010, Optics express.

[14]  Kun-Yii Tu,et al.  Demonstration of a Fourth-Order Pole-Zero Optical Filter Integrated Using CMOS Processes , 2007, Journal of Lightwave Technology.

[15]  Marc Sorel,et al.  Reconfigurable silicon filter with continuous bandwidth tunability. , 2012, Optics letters.

[16]  Jian H. Zhao,et al.  Optical Filter Design and Analysis , 1999 .

[17]  Long Chen.  Silicon photonic integrated circuits for WDM technology and optical switch , 2013, 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC).

[18]  M. Lipson,et al.  Compact bandwidth tunable microring resonators , 2007, 2008 Conference on Lasers and Electro-Optics and 2008 Conference on Quantum Electronics and Laser Science.

[19]  Qianfan Xu,et al.  Silicon microring resonators with 1.5-μm radius , 2008 .

[20]  Antonio Malacarne.  Novel ROADM architecture including optical equalization for metro-regional networks , 2015, 2015 International Conference on Photonics in Switching (PS).

[21]  Tymon Barwicz,et al.  Tunable, Fourth-Order Silicon Microring-Resonator Add-Drop Filters , 2007 .

[22]  Wesley D Sacher,et al.  Dimensional variation tolerant silicon-on-insulator directional couplers. , 2014, Optics express.

[23]  G. Prati,et al.  Robust Multilevel Coherent Optical Systems With Linear Processing at the Receiver , 2009, Journal of Lightwave Technology.