II-VI electro-optical devices for visible-wavelength modulation

Harald Babucke; Peter Thiele; Michael Rabe; Torsten Prasse; Fritz Henneberger

doi:10.1117/12.275589

6 June 1997 II-VI electro-optical devices for visible-wavelength modulation

Harald Babucke, Peter Thiele, Michael Rabe, Torsten Prasse, Fritz Henneberger

Proceedings Volume 2994, Physics and Simulation of Optoelectronic Devices V; (1997) https://doi.org/10.1117/12.275589
Event: Photonics West '97, 1997, San Jose, CA, United States

Abstract

Electro-absorptive and electro-refractive modulation and switching are shown using various proof-of-concept devices at room temperature. In a multiple quantum well structure, the field-induced broadening of the confined excitons leads to a transmission change of more than 30 percent. The Pockels effect is used to modulate and switch blue-green light by means of MBE-grown ZnSe waveguides with cladding layers of (Zn,Mn)Se on n-GaAs substrates. In a retarder geometry, the strained birefringent planar waveguide demonstrates a contrast ratio larger than 80:1 at 2.485 eV. Applying the electric filed via stripe-contacts on the top cladding layer, the waveguiding for TE-polarized light can be confined in lateral direction. In the center of the lateral waveguide channel, the contrast ratio is better than 16:1 at 2.48 eV. Switching between adjacent channels is accomplished with a contrast ratio better than 5:1.

Citation Download Citation

Harald Babucke, Peter Thiele, Michael Rabe, Torsten Prasse, and Fritz Henneberger "II-VI electro-optical devices for visible-wavelength modulation", Proc. SPIE 2994, Physics and Simulation of Optoelectronic Devices V, (6 June 1997); https://doi.org/10.1117/12.275589

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