1. Subpicometer accuracy laser wavelength sensor using multiplexed Bragg gratings
- Author
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Feng Zhao, N. Karlovac, H.E. Miller, and K. Sayano
- Subjects
Materials science ,Observational error ,Doppler spectroscopy ,business.industry ,Holography ,Physics::Optics ,Laser ,Multiplexing ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,law.invention ,Interferometry ,Wavelength ,Optics ,law ,Wavelength-division multiplexing ,Optoelectronics ,Electrical and Electronic Engineering ,business - Abstract
Wavelength- and angle-multiplexed holographic Bragg gratings are used as a highly sensitive wavelength sensor. An absolute wavelength accuracy as high as 0.3 pm has been demonstrated with gratings recorded in an Fe-doped LiNbO/sub 3/ photorefractive crystals of dimension of 5/spl times/5/spl times/4 (mm/sup 3/). This technique provides a simple and accurate solution to laser wavelength measurement in applications such as wavelength division multiplexed (WDM) fiber-optic networks, precision interferometry, Doppler spectroscopy, and others.
- Published
- 1997
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