Title :
Integrated Ultra-Low-Loss 4-Bit Tunable Delay for Broadband Phased Array Antenna Applications
Author :
Moreira, Renan L. ; Garcia, J. ; Li, Wenyuan ; Bauters, Jared ; Barton, J.S. ; Heck, Martijn J. R. ; Bowers, John E. ; Blumenthal, D.J.
Author_Institution :
Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA, USA
Abstract :
We demonstrate the design, fabrication, and characterization of a 4-bit tunable delay in an ultra-low-loss
planar platform. Temporal delays up to 12.35 ns with resolution of 0.85 ns are measured, for a total of 2.407 meters of propagation length. The TE waveguide propagation loss is measured to be
at a wavelength of 1550 nm with the lowest loss of
at 1591 nm.
Keywords :
Optical waveguides; optical delay; planar lightwave circuit;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2261807