Double dispersion from dichromated gelatin volume transmission gratings

Dennis E. Sheat; Giles R. Chamberlin; David J. McCartney

doi:10.1117/12.44708

1 July 1991 Double dispersion from dichromated gelatin volume transmission gratings

Dennis E. Sheat, Giles R. Chamberlin, David J. McCartney

Proceedings Volume 1461, Practical Holography V; (1991) https://doi.org/10.1117/12.44708
Event: Electronic Imaging '91, 1991, San Jose, CA, United States

Abstract

The use of volume transmission gratings in a wavelength multiplexer can offer significant advantages over surface relief gratings in terms of efficiency and uniformity of response to different polarizations. The authors consider a double pass through the volume transmission grating obtained by placing a mirror behind the grating. This doubles the device dispersion while maintaining good peak diffraction efficiency (>90%) and polarization independence. The authors report the design compromise and fabrication of such volume gratings, produced in dichromated gelatin, targeted to efficiently cover reduced wavelength ranges in either the 1300 or 1500 nm telecommunications window. The experimental performance is described for a range of mirror backed gratings.

Citation Download Citation

Dennis E. Sheat, Giles R. Chamberlin, and David J. McCartney "Double dispersion from dichromated gelatin volume transmission gratings", Proc. SPIE 1461, Practical Holography V, (1 July 1991); https://doi.org/10.1117/12.44708

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