Impact of phase and amplitude variations in the performance of an InP optical phased array

Marco Gagino; Kevin A. Williams; Meint Smit; Erwin A.J.M. Bente; Victor Dolores Calzadilla

Impact of phase and amplitude variations in the performance of an InP optical phased array

Photonic Integration

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

Abstract

We present a simulation study of a non-ideal optical phased array (OPA) with 8 channels operating at 1550nm, which has amplitude and phase control. We consider an OPA which suffers from etching lag effect, as well as phase and amplitude variations. The ideal OPA response produces a far field with 7 resolvable spots and -19.6dB diffraction sidelobes suppression ratio (SSR). When considering a random phase variation of ±20% of π rad, the number of resolvable spots remains unchanged and the SSR is <-11dB. Therefore, we conclude that the OPA performance is not significantly degraded for such strong phase variations. Furthermore, we show that typical voltage dependent electro-absorption losses of phase shifters can be tolerated, thereby simplifying architectures for gain control.

Original language	English
Title of host publication	IEEE Benelux Chapter Annual Symposium 2021
Publisher	Institute of Electrical and Electronics Engineers
Number of pages	4
Publication status	Published - 16 Nov 2021
Event	25th Annual Symposium of the IEEE Photonics Society Benelux - University Of Mons, Mons, Belgium Duration: 25 Nov 2021 → 26 Nov 2021 Conference number: 25 https://www.aanmelder.nl/ieee-ps-benelux-2021

Conference

Conference	25th Annual Symposium of the IEEE Photonics Society Benelux
Country/Territory	Belgium
City	Mons
Period	25/11/21 → 26/11/21
Internet address	https://www.aanmelder.nl/ieee-ps-benelux-2021

Keywords

optical phased array
LiDAR
indium phosphide

Cite this

@inproceedings{8e715ba4d2d04c328c21eaa89aeb3035,

title = "Impact of phase and amplitude variations in the performance of an InP optical phased array",

abstract = "We present a simulation study of a non-ideal optical phased array (OPA) with 8 channels operating at 1550nm, which has amplitude and phase control. We consider an OPA which suffers from etching lag effect, as well as phase and amplitude variations. The ideal OPA response produces a far field with 7 resolvable spots and -19.6dB diffraction sidelobes suppression ratio (SSR). When considering a random phase variation of ±20\% of π rad, the number of resolvable spots remains unchanged and the SSR is <-11dB. Therefore, we conclude that the OPA performance is not significantly degraded for such strong phase variations. Furthermore, we show that typical voltage dependent electro-absorption losses of phase shifters can be tolerated, thereby simplifying architectures for gain control.",

keywords = "optical phased array, LiDAR, indium phosphide",

author = "Marco Gagino and Williams, \{Kevin A.\} and Meint Smit and Bente, \{Erwin A.J.M.\} and \{Dolores Calzadilla\}, Victor",

year = "2021",

month = nov,

day = "16",

language = "English",

booktitle = "IEEE Benelux Chapter Annual Symposium 2021",

publisher = "Institute of Electrical and Electronics Engineers",

address = "United States",

note = "25th Annual Symposium of the IEEE Photonics Society Benelux ; Conference date: 25-11-2021 Through 26-11-2021",

url = "https://www.aanmelder.nl/ieee-ps-benelux-2021",

}

TY - GEN

T1 - Impact of phase and amplitude variations in the performance of an InP optical phased array

AU - Gagino, Marco

AU - Williams, Kevin A.

AU - Smit, Meint

AU - Bente, Erwin A.J.M.

AU - Dolores Calzadilla, Victor

N1 - Conference code: 25

PY - 2021/11/16

Y1 - 2021/11/16

N2 - We present a simulation study of a non-ideal optical phased array (OPA) with 8 channels operating at 1550nm, which has amplitude and phase control. We consider an OPA which suffers from etching lag effect, as well as phase and amplitude variations. The ideal OPA response produces a far field with 7 resolvable spots and -19.6dB diffraction sidelobes suppression ratio (SSR). When considering a random phase variation of ±20% of π rad, the number of resolvable spots remains unchanged and the SSR is <-11dB. Therefore, we conclude that the OPA performance is not significantly degraded for such strong phase variations. Furthermore, we show that typical voltage dependent electro-absorption losses of phase shifters can be tolerated, thereby simplifying architectures for gain control.

AB - We present a simulation study of a non-ideal optical phased array (OPA) with 8 channels operating at 1550nm, which has amplitude and phase control. We consider an OPA which suffers from etching lag effect, as well as phase and amplitude variations. The ideal OPA response produces a far field with 7 resolvable spots and -19.6dB diffraction sidelobes suppression ratio (SSR). When considering a random phase variation of ±20% of π rad, the number of resolvable spots remains unchanged and the SSR is <-11dB. Therefore, we conclude that the OPA performance is not significantly degraded for such strong phase variations. Furthermore, we show that typical voltage dependent electro-absorption losses of phase shifters can be tolerated, thereby simplifying architectures for gain control.

KW - optical phased array

KW - LiDAR

KW - indium phosphide

M3 - Conference contribution

BT - IEEE Benelux Chapter Annual Symposium 2021

PB - Institute of Electrical and Electronics Engineers

T2 - 25th Annual Symposium of the IEEE Photonics Society Benelux

Y2 - 25 November 2021 through 26 November 2021

ER -

Impact of phase and amplitude variations in the performance of an InP optical phased array

Abstract

Conference

Keywords

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