CubeSat deformable mirror demonstration

Cahoy, Kerri; Marinan, Anne; Kerr, Caitlin; Cheng, K. Z.; Jamil, Sara

doi:10.1117/12.926681

Cited by 6 publications

(7 citation statements)

References 17 publications

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“…But later with the development of high bandwidth wavefront phase controllers e.g., deformable mirrors based on micro-electromechanical systems (MEMS) and with the development of new efficient algorithms, this approach is gaining popularity these days. The AO using MEMS for long range FSO systems is found in [264]- [267]. The use of adaptive optics for high capacity returns from LEO or GEO satellite-to-ground receiver is investigated in [268].…”

Section: Receivermentioning

confidence: 99%

Optical Communication in Space: Challenges and Mitigation Techniques

Kaushal

Kaddoum

2017

IEEE Commun. Surv. Tutorials

1,353

721

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Abstract-In recent years, free space optical (FSO) communication has gained significant importance owing to its unique features: large bandwidth, license free spectrum, high data rate, easy and quick deployability, less power and low mass requirements. FSO communication uses optical carrier in the near infrared (IR) band to establish either terrestrial links within the Earth's atmosphere or inter-satellite/deep space links or ground-to-satellite/satellite-to-ground links. It also finds its applications in remote sensing, radio astronomy, military, disaster recovery, last mile access, backhaul for wireless cellular networks and many more. However, despite of great potential of FSO communication, its performance is limited by the adverse effects (viz., absorption, scattering and turbulence) of the atmospheric channel. Out of these three effects, the atmospheric turbulence is a major challenge that may lead to serious degradation in the bit error rate (BER) performance of the system and make the communication link infeasible. This paper presents a comprehensive survey on various challenges faced by FSO communication system for ground-to-satellite/satellite-to-ground and inter-satellite links. It also provide details of various performance mitigation techniques in order to have high link availability and reliability. The first part of the paper will focus on various types of impairments that pose a serious challenge to the performance of optical communication system for ground-to-satellite/satellite-to-ground and inter-satellite links. The latter part of the paper will provide the reader with an exhaustive review of various techniques both at physical layer as well as at the other layers (link, network or transport layer) to combat the adverse effects of the atmosphere. It also uniquely presents a recently developed technique using orbital angular momentum for utilizing the high capacity advantage of optical carrier in case of space-based and near-Earth optical communication links. This survey provides the reader with comprehensive details on the use of space-based optical backhaul links in order to provide high capacity and low cost backhaul solutions.

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Section: Receivermentioning

confidence: 99%

Optical Communication in Space: Challenges and Mitigation Techniques

Kaushal

Kaddoum

2017

IEEE Commun. Surv. Tutorials

1,353

721

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“…More details on the DeMi optomechanical design can be found in previous publications. [1][2][3][4][5][6] The key optical design parameters are summarized in Table 1.…”

Section: Demi Optical Payloadmentioning

confidence: 99%

“…The Deformable Mirror Demonstration Mission (DeMi) payload is an optical instrument that is demonstrating the on-orbit performance of a 140-actuator Microelectromechanical Systems Deformable Mirror (MEMS DM) on a 6U (10 × 20 × 30 cm 3 ) CubeSat. [1][2][3][4][5][6] The key payload requirements are to measure individual DM actuator wavefront displacement contributions to a precision of 12 nm, measure low order optical aberrations to λ∕10 accuracy and λ∕50 precision, and correct both static and dynamic wavefront errors to <100 nm RMS error. The DeMi mission will raise the Technology Readiness Level (TRL) of MEMS DM technology from a five to at least a seven for future space telescope applications 7 (see the Appendix for a description of NASA TRLs).…”

Section: Introductionmentioning

confidence: 99%

Optical calibration and first light for the deformable mirror demonstration mission CubeSat (DeMi)

Morgan

Douglas

Allan

et al. 2021

J. Astron. Telesc. Instrum. Syst.

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Microelectromechanical systems (MEMS) deformable mirrors (DMs) can provide high-precision wavefront control with a small form-factor, low power device. This makes them a key technology option for future space telescopes requiring adaptive optics for high-contrast imaging of exoplanets with a coronagraph instrument. The Deformable Mirror Demonstration Mission (DeMi) CubeSat payload is a miniature space telescope designed to demonstrate MEMS DM technology in space for the first time. The DeMi payload contains a 50-mm primary mirror, an internal calibration laser source, a 140-actuator MEMS DM from Boston Micromachines Corporation, an image plane wavefront sensor, and a Shack-Hartmann wavefront sensor (SHWFS). The key DeMi payload requirements are to measure individual actuator wavefront displacement contributions to a precision of 12 nm and correct both static and dynamic wavefront errors in space to less than 100-nm RMS error. The DeMi mission will raise the technology readiness level of MEMS DM technology from a five to at least a seven for future space telescope applications. We summarize the DeMi optical payload design, calibration, optical diffraction model, alignment, integration, environmental testing, and preliminary data from in-space operations. Ground testing data show that the DeMi SHWFS can measure individual actuator deflections on the MEMS DM to within 10 nm of interferometric calibration measurements and can meet the 12-nm precision mission requirement for actuator deflection voltages between 0 and 120 V. Payload data from throughout environmental testing show that the MEMS DM and DeMi payload survived environmental testing and provides a valuable baseline to compare with space data. Initial data from space operations show the MEMS DM actuating in space with a median agreement between individual actuator measurements from space and equivalent ground testing data of 12 nm. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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“…In addition to their use, deformable mirrors can also be utilized as the amplitude or phase modulator that regulates the transmitted signals in free space laser communication systems. 4,5 A variety of habits are found in microelectromechanical deformable mirror technology. From adaptive optics for correction of atmospheric turbulence and in-vivo imaging of the human retina to the design for a full-field scanning telescope and maximizing the contrast of a nulling interferometer for excellent imagery.…”

Section: Demi Backgroundmentioning

confidence: 99%

INTERPRETATION OF DEFORMABLE MIRROR DEMONSTRATING MISSION (DeMi) CUBESAT: A REVIEW

Khandagale¹,

Chaganti²

2020

IJEAST

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The respective paper describes the design and implementation in a multi-actuator microelectromechanical system (MEMS) based deformable mirror (DM) for the 6U CubeSat Deformable Mirror Demonstration Mission (DeMi). The Deformable Mirror Demonstration Mission (DeMi) payload will specifically imply about 140 actuator MEMS. Mainly two operational modes of DEMI payload are there, one mode that sees an internal illumination source and another manner that applies an external aperture to modify picture resolution and scale down the effects of atmospheric turbulence. DeMi is a project to demonstrate and characterize the performance of a deformable mirror in LEO on a 6U Cubesat. Space telescopes constructed with chronographs and wavefront control systems are very important to get the high contrast of 10 10 to directly image an Earth-like exoplanet around a sun-like star at optical wavelengths. The contribution of this paper is, we have studied various important parts of the Deformable Mirror Demonstrating Mission, Deformable Mirrors, and its importance. In this report, we give an overview of Adaptive optics, Optical Design, Payload, operation, power, and sensors with the help of diagrams and board.

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CubeSat deformable mirror demonstration

Cited by 6 publications

References 17 publications

Optical Communication in Space: Challenges and Mitigation Techniques

Optical Communication in Space: Challenges and Mitigation Techniques

Optical calibration and first light for the deformable mirror demonstration mission CubeSat (DeMi)

INTERPRETATION OF DEFORMABLE MIRROR DEMONSTRATING MISSION (DeMi) CUBESAT: A REVIEW

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