Thermo-optic control of the longitudinal radiation angle in a silicon-based optical phased array

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 60
  • Download : 0
We demonstrate longitudinal beam-steering with a 1 x 16 silicon optical phased array (OPA) using a monochromatic light source and thermo-optic control of the refractive index in the grating radiator region. The refractive index is controlled by forming a series of n-i-n heaters, placing i-regions in each radiator of the OPA. When the biased voltage in the heaters is increased, the refractive index of the radiator region is increased by the thermo-optic effect, and the longitudinal radiation angle is changed according to the Bragg condition. The transversal beans-steering is accomplished by phase control with the phase shifters, which are devised with a p-i-n diode using the electro-optic effect. With these electro-optic p-i-n phase shifters and n-i-n thermo-optic radiators, we achieve a relatively wide 2D beans-steering in a range of 10.0 degrees/45.4 degrees in the longitudinal/transversal directions with a 1.55 mu m light source. The tuning efficiency is 0.016 degrees/mW in the longitudinal beam-steering. (C) 2019 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2019-01
Language
English
Article Type
Article
Citation

OPTICS LETTERS, v.44, no.2, pp.411 - 414

ISSN
0146-9592
DOI
10.1364/OL.44.000411
URI
http://hdl.handle.net/10203/250169
Appears in Collection
EE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0