Delay-time-enhanced photonic crystal fiber array for wireless communications using two-dimensional X-band phased-array antennas

Yongqiang Jiang; Zhong Shi; Brie Howley; Xiaonan Chen; Maggie Yihong Chen; Ray T. Chen

doi:10.1117/1.2149327

1 December 2005 Delay-time-enhanced photonic crystal fiber array for wireless communications using two-dimensional X-band phased-array antennas

Yongqiang Jiang, Zhong Shi, Brie Howley, Xiaonan Chen, Maggie Yihong Chen, Ray T. Chen

Author Affiliations +

Optical Engineering, Vol. 44, Issue 12, 125001 (December 2005). https://doi.org/10.1117/1.2149327

Abstract

Continuously tunable optical true time-delay (TTD) modules based on dispersion-enhanced photonic crystal fibers (DEPCFs) are demonstrated to provide continuous microwave squint-free beam scanning for an X-band (8 to 12 GHz) phased-array antenna (PAA) system. The dispersion of the fabricated photonic crystal fibers (PCFs) is as high as –600 ps/nm km at 1550 nm. By employing PCFs to increase the dispersion, the TTD module size can be proportionally reduced. The time delay is continuously tunable from –31 ps to 31 ps between adjacent delay lines by tuning the laser wavelength continuously from 1528 to 1560 nm. The far-field radiation patterns of a 1×4 subarray were measured from –45 to 45 deg scanning angles. Squint-free operation is experimentally confirmed. Wavelength conversion is also demonstrated to confirm that time-delay information can be successfully transferred from one wavelength to the other without being changed, which is suitable to be implemented in 2-D phased-array antenna systems. The TTD formation idea presented is suitable for not only the X band, but also the other higher microwave frequencies, such as the K band.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Yongqiang Jiang, Zhong Shi, Brie Howley, Xiaonan Chen, Maggie Yihong Chen, and Ray T. Chen "Delay-time-enhanced photonic crystal fiber array for wireless communications using two-dimensional X-band phased-array antennas," Optical Engineering 44(12), 125001 (1 December 2005). https://doi.org/10.1117/1.2149327

Published: 1 December 2005

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available