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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 21 — Oct. 21, 2013
  • pp: 25113–25119

Mode multi/demultiplexer based on cascaded asymmetric Y-junctions

Weiwei Chen, Pengjun Wang, and Jianyi Yang  »View Author Affiliations


Optics Express, Vol. 21, Issue 21, pp. 25113-25119 (2013)
http://dx.doi.org/10.1364/OE.21.025113


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Abstract

A mode-(de)multiplexer with low loss and large spectral bandwidth is proposed. The device is designed by utilizing a structure with cascaded asymmetric Y-junctions. By carefully controlling the widths of the wide and narrow arms of the Y-junctions, the fundamental mode of a narrow arm excites the higher-order mode of its stem in the multiplexing case, and a high-order mode of the stem separated from other lower-order modes evolves into the fundamental mode of the narrow arm in the demultiplexing case. As an example, a 1 × 4 mode-(de)multiplexer is analyzed by using the beam propagation method. Simulation results show the demultiplexed crosstalk is lower than –21.8 dB, under a common spectral bandwidth of 140 nm. The insertion loss is negligible.

© 2013 Optical Society of America

OCIS Codes
(060.4230) Fiber optics and optical communications : Multiplexing
(130.0130) Integrated optics : Integrated optics
(230.7370) Optical devices : Waveguides

ToC Category:
Integrated Optics

History
Original Manuscript: September 3, 2013
Revised Manuscript: September 22, 2013
Manuscript Accepted: September 23, 2013
Published: October 14, 2013

Citation
Weiwei Chen, Pengjun Wang, and Jianyi Yang, "Mode multi/demultiplexer based on cascaded asymmetric Y-junctions," Opt. Express 21, 25113-25119 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-21-25113


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