Polymer-based compact comb filter with flat top response

Qiang Wu, Pak L. Chu, Hau Ping Chan, Bishnu Pal

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


A polymer-based compact comb filter with flat top spectral characteristics is reported. A design equation has been derived from which the values of the device parameters can be optimized to render the desired performance characteristics of the filter. The polymer waveguide version of this filter has been fabricated and its experimental spectral characteristics agree very well with the theoretical one. This filter is compact with dimensions 26 × 8 mm2 because no cascade of unbalanced Mach-Zehnder interferometers is used. Its flat top extends to 50% of the channel width and channel isolation is 22 dB. The filter covers both the C-band and L-band wavelength range with channel spacing 1.6 nm.
Original languageEnglish
Pages (from-to)2619-2621
JournalIEEE Photonics Technology Letters
Issue number12
Publication statusPublished - Dec 2005


Dive into the research topics of 'Polymer-based compact comb filter with flat top response'. Together they form a unique fingerprint.

Cite this