Switched three-dimensional photonic delay line using directly modulated semiconductor lasers for microwave radar processing

Nicholas Madamopoulos; Nabeel A. Riza

doi:10.1117/12.257231

5 November 1996 Switched three-dimensional photonic delay line using directly modulated semiconductor lasers for microwave radar processing

Nicholas Madamopoulos, Nabeel A. Riza

Author Affiliations +

Proceedings Volume 2845, Radar Processing, Technology, and Applications; (1996) https://doi.org/10.1117/12.257231
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

A 3-bit binary photonic delay line is demonstrated at 1 GHz using a directly modulated semiconductor laser and remote interconnection fiber-optics. Three types of freespace delay bit geometries are tested for 5.686 ns, 1.667 ns, and 8.83 ps delay bits. This photonic delay line uses ferroelectric liquid crystal optical on/off devices for optical path switching and active polarization noise filtering. 3D imaging optics and antireflection coated optics are successfully used to minimize photonic delay line insertion losses and interchannel crosstalk. The 3-bit system is fully characterized for measured and designed performance.

Citation Download Citation

Nicholas Madamopoulos and Nabeel A. Riza "Switched three-dimensional photonic delay line using directly modulated semiconductor lasers for microwave radar processing", Proc. SPIE 2845, Radar Processing, Technology, and Applications, (5 November 1996); https://doi.org/10.1117/12.257231

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