A frequency reference photonic integrated circuit for WDM with low polarization dependence
| Autor: | R. P. Gnall, Barry Miller, Thomas L. Koch, Uziel Koren, B. Tell, J.-M. Verdiell, Michael A. Newkirk |
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| Rok vydání: | 1993 |
| Předmět: |
Physics
Reproducibility Birefringence Materials science business.industry Detector Photonic integrated circuit Physics::Optics Integrated circuit Polarization (waves) Waveguide (optics) Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Wavelength Optics law Wavelength-division multiplexing Optoelectronics Electrical and Electronic Engineering Photonics Optical filter business Quantum well |
| Zdroj: | IEEE Photonics Technology Letters. 5:451-454 |
| ISSN: | 1941-0174 1041-1135 |
| Popis: | 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 AA, as well as improved absolute frequency control and reproducibility. A standard deviation in absolute filter wavelength of 3.33 AA is measured on a random set of devices from a 2-in wafer. The ten channels are evenly spaced by 7.2 AA. 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 circuits requiring tight wavelength tolerance and polarization insensitivity. > |
| Databáze: | OpenAIRE |
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