Efficient 2D Optical Beamforming Network With Sub Partitioning Capability Based on Raised Cosine Chirped Fiber Grating and Mach-Zehnder Delay Interferometer

In this paper, a two-dimensional true time delay optical beamforming network (OBFN) has been proposed with sub partitioning capability for 3X3 phased array antenna (PAA) with operating frequency in X-Band. The architecture is based on raised cosine apodised chirp fiber Bragg grating (CFBG) and Mach-...

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Main Authors: Ritesh Kumar, Sanjeev Kumar Raghuwanshi
Format: Article
Language:English
Published: IEEE 2021-01-01
Series:IEEE Photonics Journal
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9437833/
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author Ritesh Kumar
Sanjeev Kumar Raghuwanshi
author_facet Ritesh Kumar
Sanjeev Kumar Raghuwanshi
author_sort Ritesh Kumar
collection DOAJ
description In this paper, a two-dimensional true time delay optical beamforming network (OBFN) has been proposed with sub partitioning capability for 3X3 phased array antenna (PAA) with operating frequency in X-Band. The architecture is based on raised cosine apodised chirp fiber Bragg grating (CFBG) and Mach-Zehnder delay interferometer (MZDI). Compared to unapodised CFBG, raised cosine apodization drastically reduces the ripple as well as sidelobes and gives a flat response in the passband of reflection spectrum. Multiwavelength optical signals with a wavelength difference of 0.3 nm are used to steer 10 GHz RF signal in elevation and azimuth direction. Further, broad angular control of beam radiation due to sub partitioned PAA is also demonstrated. The RF signal beam is steered in elevation at -62.2,-31.9, and-10.8 degrees, and in azimuth at 123.6 and 55.9 degrees. Theoretical analysis of the OBFN has been presented and validated with the experimental results. At the best of our knowledge, delay characteristics of raised cosine apodised CFBG have been theoretically explored for the first time with mathematical formulation and a comparative discussion is given with the measured data.
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spelling doaj.art-79788c057d434d28a739fc04a6aa21042022-12-21T22:33:15ZengIEEEIEEE Photonics Journal1943-06552021-01-0113311110.1109/JPHOT.2021.30821859437833Efficient 2D Optical Beamforming Network With Sub Partitioning Capability Based on Raised Cosine Chirped Fiber Grating and Mach-Zehnder Delay InterferometerRitesh Kumar0https://orcid.org/0000-0003-4423-0433Sanjeev Kumar Raghuwanshi1https://orcid.org/0000-0003-3820-2890Photonic Laboratory, Department of Electronics Engineering, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad, Jharkhand, IndiaPhotonic Laboratory, Department of Electronics Engineering, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad, Jharkhand, IndiaIn this paper, a two-dimensional true time delay optical beamforming network (OBFN) has been proposed with sub partitioning capability for 3X3 phased array antenna (PAA) with operating frequency in X-Band. The architecture is based on raised cosine apodised chirp fiber Bragg grating (CFBG) and Mach-Zehnder delay interferometer (MZDI). Compared to unapodised CFBG, raised cosine apodization drastically reduces the ripple as well as sidelobes and gives a flat response in the passband of reflection spectrum. Multiwavelength optical signals with a wavelength difference of 0.3 nm are used to steer 10 GHz RF signal in elevation and azimuth direction. Further, broad angular control of beam radiation due to sub partitioned PAA is also demonstrated. The RF signal beam is steered in elevation at -62.2,-31.9, and-10.8 degrees, and in azimuth at 123.6 and 55.9 degrees. Theoretical analysis of the OBFN has been presented and validated with the experimental results. At the best of our knowledge, delay characteristics of raised cosine apodised CFBG have been theoretically explored for the first time with mathematical formulation and a comparative discussion is given with the measured data.https://ieeexplore.ieee.org/document/9437833/Chirped fiber Bragg gratingMach-Zehnder interferometeroptical beamforming networktrue-time delaytwo dimensional angular control
spellingShingle Ritesh Kumar
Sanjeev Kumar Raghuwanshi
Efficient 2D Optical Beamforming Network With Sub Partitioning Capability Based on Raised Cosine Chirped Fiber Grating and Mach-Zehnder Delay Interferometer
IEEE Photonics Journal
Chirped fiber Bragg grating
Mach-Zehnder interferometer
optical beamforming network
true-time delay
two dimensional angular control
title Efficient 2D Optical Beamforming Network With Sub Partitioning Capability Based on Raised Cosine Chirped Fiber Grating and Mach-Zehnder Delay Interferometer
title_full Efficient 2D Optical Beamforming Network With Sub Partitioning Capability Based on Raised Cosine Chirped Fiber Grating and Mach-Zehnder Delay Interferometer
title_fullStr Efficient 2D Optical Beamforming Network With Sub Partitioning Capability Based on Raised Cosine Chirped Fiber Grating and Mach-Zehnder Delay Interferometer
title_full_unstemmed Efficient 2D Optical Beamforming Network With Sub Partitioning Capability Based on Raised Cosine Chirped Fiber Grating and Mach-Zehnder Delay Interferometer
title_short Efficient 2D Optical Beamforming Network With Sub Partitioning Capability Based on Raised Cosine Chirped Fiber Grating and Mach-Zehnder Delay Interferometer
title_sort efficient 2d optical beamforming network with sub partitioning capability based on raised cosine chirped fiber grating and mach zehnder delay interferometer
topic Chirped fiber Bragg grating
Mach-Zehnder interferometer
optical beamforming network
true-time delay
two dimensional angular control
url https://ieeexplore.ieee.org/document/9437833/
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AT sanjeevkumarraghuwanshi efficient2dopticalbeamformingnetworkwithsubpartitioningcapabilitybasedonraisedcosinechirpedfibergratingandmachzehnderdelayinterferometer