Design of high performance large tolerance polymer interleaver with 2 stages M-Z structure

D. Y. Wang*, Haydn Chen, P. L. Chu

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


Interleaver has been one of the key components in the wave division multiple (WDM) communication system. Cascaded Mach-Zehnder (M-Z) polymer interleaver by planar lightwave circuit (PLC) technique has great advantages of high performance and mass production. The performance optimization and tolerance calculation are critical in practical designs. This paper presents the design method and results of such high performance polymer waveguide interleaver with large tolerance.First, four targets parameters are given to judge a interleaver's optical performance. Second, use the Jones Matrix the key parameters, couple ratios of 3 couplers, are calculated to meet the high performance. The optimal values are acquired by compromise with 3-D tolerance design to ensure as large as possible couple ratio tolerance. Then with such ratio tolerance the waveguide structure is optimized to achieve the large index tolerance of waveguide material by effective index method with build-in perturbation correction (EIMPC). Finally in our design the high performance can be guaranteed within the large index variations of BCB material.

Original languageEnglish
Article number157
Pages (from-to)955-963
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Issue numberPART 2
StatePublished - 1 Dec 2004
EventPassive Components and Fiber-based Devices - Beijing, China
Duration: 9 Nov 200411 Nov 2004


  • Couple ratio
  • Interleaver
  • Optimal design
  • Polymer waveguide
  • Tolerance

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