Waveguide-Based Optical Phased Array

Zheng, Yingjing; Lee, Hooi Sing; Meyne, Sascha; Petrov, Alexander Yu.; Eich, Manfred

doi:10.1109/lpt.2013.2276746

Cited by 10 publications

(3 citation statements)

References 14 publications

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“…OPAs using optical waveguides can particularly be configured as monolithic devices, including a light source, and are expected to realize compact and lightweight optical beam steering devices. Many studies are currently being conducted on their application in various fields, including high-speed and low-consumption optical switch applications in telecommunication [2], holographic displays [3], and light detection and ranging [4] [5].…”

Section: Introductionmentioning

confidence: 99%

[Paper] Design for Stray Light Suppression of an Optical Phased Array with Electro-optic Polymer

Miyamoto,

Miura,

Machida

et al. 2024

MTA

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We have studied high-speed optical phased arrays (OPAs) using electro-optic (EO) polymers for various applications, including range imaging, three-dimensional shape measurement, spatial light communication, and image display. The suppression of the stray light caused by radiation loss in curved waveguides and coupling loss in optical splitters is very important in OPAs using EO polymer. Stray light causes degradation, for example, in the image quality on a display or the signal-to-noise ratio on an optical sensor. In this study, we investigate optical loss reduction by optimizing the design of a curved waveguide and an optical splitter to suppress stray light and improve the optical beam quality from OPAs. We perform numerical simulations and an experimental evaluation of the designed OPAs and confirm the effectiveness of the optimal design for stray light suppression.

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Section: Introductionmentioning

confidence: 99%

[Paper] Design for Stray Light Suppression of an Optical Phased Array with Electro-optic Polymer

Miyamoto,

Miura,

Machida

et al. 2024

MTA

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“…Optical phased arrays (OPAs) enable us to control an individual phase of the divided optical beam to manipulate an interference pattern of a combined optical beam [1]. OPAs have been widely investigated for various applications such as network switches [2], optical interconnects [3], holographic displays [4], and distance-measuring sensors [5]. General OPAs are optical-waveguide devices, and the individual phase of the guided light beam is controlled on the basis of the thermo-optic (TO) and electro-optic (EO) effects, and therefore movable parts (such as polygon mirrors) are unnecessary.…”

Section: Introductionmentioning

confidence: 99%

High-Speed Optical-Beam Scanning by an Optical Phased Array Using Electro-Optic Polymer Waveguides

Hirano¹,

Miyamoto²,

Miura³

et al. 2020

IEEE Photonics J.

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Optical phased arrays (OPAs), which manipulate an optical beam by controlling the phase of light, are optical devices characterized by high speed, small size, light weight, and high reliability that make various applications possible. In this study, an eight-channelwaveguide OPA using an electro-optic (EO) polymer for phase control was fabricated. Very high-speed optical beam scanning with a frequency of 2 MHz was demonstrated by applying a driving waveform superimposing sinusoidal and rectangular-wave voltages. Furthermore, the EO polymer OPA can be operated with a low total-operation power consumption of 0.38 mW at a scanning speed of 500 kHz.

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“…An optical phased array (OPA) is an optical beam steering device without any mechanical moving parts, that is expected to have many applications, such as in network switching devices, 1) optical sensors, 2) light detection and ranging devices, 3) and holographic displays. 4) Beam steering angle and speed are important features of the OPA that depend on the pitch of radiating elements and the response time of phase shifters. 5) Large steering angles were demonstrated using the liquid crystal technology, 6,7) but the liquid crystal OPA has limited speed because of its slowly responding phase shifters.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of an optical phased array using electro-optic polymer phase shifters

Hirano¹,

Motoyama²,

Tanaka³

et al. 2018

Jpn. J. Appl. Phys.

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We have been investigating an optical phased array (OPA) using electro-optic (EO) polymers in phase shifters to achieve ultrafast optical beam steering. In this paper, we describe the basic structures of the OPA using EO polymer phase shifters and show the beam steering capability of the OPA. The designed OPA has a multimode interference (MMI) beam splitter and 8-channel polymer waveguides with EO polymer phase shifters. We compare 1 ' 8 MMI and cascaded 1 ' 2 MMI beam splitters numerically and experimentally, and then obtain uniform intensity outputs from the 1 ' 8 beam splitter. We fabricate the EO polymer OPA with a 1 ' 8 MMI beam splitter to prevent intensity dispersion due to radiation loss in bending waveguides. We also evaluate the optical beam steering capability of the fabricated OPA and found a 2.7°deflection of far-field patterns when applying a voltage difference of 25 V in adjacent phase shifters.

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Waveguide-Based Optical Phased Array

Cited by 10 publications

References 14 publications

[Paper] Design for Stray Light Suppression of an Optical Phased Array with Electro-optic Polymer

[Paper] Design for Stray Light Suppression of an Optical Phased Array with Electro-optic Polymer

High-Speed Optical-Beam Scanning by an Optical Phased Array Using Electro-Optic Polymer Waveguides

Demonstration of an optical phased array using electro-optic polymer phase shifters

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