1 to 100 channel waveguide beam splitter and TE to TM polarization converter

Alan C. G. Nutt; Joseph F. Revelli; Sharlene A. Wilson; Jeffrey I. Hirsh; David A. Roberts; Stephen P. Barry

doi:10.1117/12.190919

21 October 1994 1- to 100-channel waveguide beam splitter and TE to TM polarization converter

Alan C. G. Nutt, Joseph F. Revelli, Sharlene A. Wilson, Jeffrey I. Hirsh, David A. Roberts, Stephen P. Barry

Proceedings Volume 2291, Integrated Optics and Microstructures II; (1994) https://doi.org/10.1117/12.190919
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

This paper describes a channel waveguide beam splitter (CWBS) in which a single laser beam can be split into many beams using glass stripe waveguides and localized surface relief gratings. The grating element situated on top of individual 90 degree(s) T-branches couples a fraction of the backbone light down a side channel and acts as a miniature mode converter. Single-mode TE light in the backbone is converted into single-mode TM light in the side channel. The laser wavelength used in these experiments was 830 nm. Each individual grating was only a few microns in length and so the grating acceptance exhibited a large bandwidth. The total excess loss coupling the input waveguide optical power partially into 100 waveguide branches was only 0.25 dB.

Citation Download Citation

Alan C. G. Nutt, Joseph F. Revelli, Sharlene A. Wilson, Jeffrey I. Hirsh, David A. Roberts, and Stephen P. Barry "1- to 100-channel waveguide beam splitter and TE to TM polarization converter", Proc. SPIE 2291, Integrated Optics and Microstructures II, (21 October 1994); https://doi.org/10.1117/12.190919

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