Applications of advanced microring filters for switching in next generation elastic optical networks

We investigate the use of high-order sum-difference all-pass microring 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. Simulations performed on 30 Gbaud Nyquist PM-QPSK signals show that the proposed structure can achieve similar or better performance than commercial spectrum selective switch filters. Induced OSNR penalty per node due to filtering can be reduced with the adoption of these filters, thus increasing the maximum number of nodes that can be traversed before signal is corrupted. Filters programmability in terms of bandwidth is also investigated.

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

[2]  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.

[3]  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).

[4]  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.

[5]  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.

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

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

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

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

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

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

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

[13]  2015 International Conference on Optical Network Design and Modeling, ONDM 2015, Pisa, Italy, May 11-14, 2015 , 2015, ONDM.

[14]  John E. Bowers,et al.  Integrated microwave photonics , 2015, 2015 International Topical Meeting on Microwave Photonics (MWP).