Abstract

Regarding the importance of bandwidth and capacity expansion in communication systems, a novel mode division (de)multiplexer based on subwavelength grating (SWG) is proposed. SWG-based devices could have smaller sizes, be much more fabrication-tolerant, and have much wider bandwidths due to the reduced confinement of the field and dispersion. It is also feasible to reduce the loss of a SWG-based device by tuning the duty cycle of the grating. Owing to these properties of SWGs, we have designed a compact fabrication-tolerant two-mode division (de)multiplexer. A flat-top transmission of >0.89 (loss <0.5  dB) is obtained over 65 nm from 1500 to 1565 nm, completely covering the entire C-band used for dense wavelength division multiplexing. Moreover, the cross-talk is <10  dB for a broad bandwidth of 120  nm over which the loss of the complete device including both multiplexer and demultiplexer is <1  dB. Therefore, the proposed device is promising for high-capacity optical communications in both conventional and entirely SWG-based silicon photonic circuits.

© 2017 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Compact two-mode (de)multiplexer based on symmetric Y-junction and Multimode interference waveguides

Yaming Li, Chong Li, Chuanbo Li, Buwen Cheng, and Chunlai Xue
Opt. Express 22(5) 5781-5786 (2014)

Silicon mode (de)multiplexers with parameters optimized using shortcuts to adiabaticity

Defen Guo and Tao Chu
Opt. Express 25(8) 9160-9170 (2017)

On-chip two-mode division multiplexing using tapered directional coupler-based mode multiplexer and demultiplexer

Yunhong Ding, Jing Xu, Francesco Da Ros, Bo Huang, Haiyan Ou, and Christophe Peucheret
Opt. Express 21(8) 10376-10382 (2013)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (15)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription