Compact integrated silica wavelength filters

Christopher N. Morgan, Siyuan Yu, Richard V. Penty, Ian H. White

Research output: Contribution to journalArticlepeer-review

7 Citations (SciVal)


The realization of compact low-loss wavelength filters using two-dimensional integrated optics (2DIO) in a silica-on-silica material system is reported. Two designs suitable for data-communications applications are reported: a 4 × 4 channel 6.4-nm channel wavelength spacing device and an 8 × 8 channel 3.2-nm channel wavelength spacing device. The devices are fabricated in one deep etch step, and after cleaving the four-channel device has a footprint of 4 × 3 mm and the eight-channel device 8 × 6.5 mm. The average crosstalk of the devices is >22 dB for adjacent channels and 26 dB for nonadjacent channels, and their fiber-to-fiber insertion losses are <12 dB.

Original languageEnglish
Pages (from-to)1303-1305
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number9
Publication statusPublished - 1 Sept 2002


  • Demultiplexer
  • Gratings
  • Integrated optics
  • Silica
  • Wavelength-division multiplexing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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