Abstract
A photonic circuit implementing ten frequency reference filters for narrow-channel wavelength division multiplexing (WDM) has been fabricated. A diluted multiquantum-well waveguide structure is shown to yield a very low TE/TM polarization dependence of 1 A, as well as improved absolute frequency control and reproducibility. A standard deviation in absolute filter wavelength of 333 A is measured on a random set of devices from a 2 in wafer. The ten channels are evenly spaced by 7.2 A. Such filters can be used to lock tunable lasers to a set of reference frequencies for WDM Applications. The demonstrated diluted multiquantum-well waveguide structure with low birefringence and improved absolute wavelength control could potentially be used in other WDM integrated circuit requiring tight wavelength tolerance and polarization insensitivity.
Original language | English (US) |
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Pages (from-to) | 451-454 |
Number of pages | 4 |
Journal | IEEE Photonics Technology Letters |
Volume | 5 |
Issue number | 4 |
DOIs | |
State | Published - Apr 1993 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering