The WDM performance of compact X-junction switches in polymer

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

4 Scopus Citations
View graph of relations


Related Research Unit(s)


Original languageEnglish
Pages (from-to)423-426
Journal / PublicationMicrowave and Optical Technology Letters
Issue number6
Publication statusPublished - 20 Mar 2001


We report here in detail the WDM performance of a wide-angle novel X-junction switch (TSXB) that we developed earlier. At a full branching angle of 1.5°, our new design achieves a bandwidth of 145 nm (1470-1615 nm) at 1.5 dB over which the crosstalk is kept below -18.0 dB. Maintaining the same order of bandwidth in normal X-junctions (NXB) requires a branching angle as narrow as 0.2°. A TSXB is thus suitable for WDM systems, yet comes in a size significantly more wide angle (and hence more compact) than an NXB.

Research Area(s)

  • Digital optical switch, Integrated optics, Polymer waveguides, WDM systems, X-junction