Abstract
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 language | English |
|---|---|
| Pages (from-to) | 1303-1305 |
| Number of pages | 3 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 14 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1 Sept 2002 |
Funding
Manuscript received January 17, 2002; revised May 7, 2002. This work was supported by the U.K. EPSRC Photon project. C. N. Morgan, R. V. Penty, and I. H. White are with the Centre for Photonic Communication Systems, Cambridge University Engineering Department, Cambridge CB2 3DS, U.K. (e-mail: [email protected]). S. Yu is with the Centre for Communications Research, University of Bristol, Bristol BS8 1TR, U.K. Publisher Item Identifier 10.1109/LPT.2002.800728.
Keywords
- 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