Next Article in Journal
Fusion of Intraoperative 3D B-mode and Contrast-Enhanced Ultrasound Data for Automatic Identification of Residual Brain Tumors
Previous Article in Journal
Research on the Blind Source Separation Method Based on Regenerated Phase-Shifted Sinusoid-Assisted EMD and Its Application in Diagnosing Rolling-Bearing Faults
Previous Article in Special Issue
Time-Sequential Working Wavelength-Selective Filter for Flat Autostereoscopic Displays
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessFeature PaperArticle
Appl. Sci. 2017, 7(4), 411; doi:10.3390/app7040411

Diffraction-Based Optical Switching with MEMS

1
College of Optical Sciences, University of Arizona, Tucson, AZ 85721, USA
2
School of Electrical Engineering and Computer Sciences, University of California Berkeley, Berkeley, CA 94720, USA
*
Author to whom correspondence should be addressed.
Received: 15 March 2017 / Revised: 7 April 2017 / Accepted: 10 April 2017 / Published: 19 April 2017
(This article belongs to the Special Issue Optical Modulators and Switches)
View Full-Text   |   Download PDF [3052 KB, uploaded 24 April 2017]   |  

Abstract

We are presenting an overview of MEMS-based (Micro-Electro-Mechanical System) optical switch technology starting from the reflective two-dimensional (2D) and three-dimensional (3D) MEMS implementations. To further increase the speed of the MEMS from these devices, the mirror size needs to be reduced. Small mirror size prevents efficient reflection but favors a diffraction-based approach. Two implementations have been demonstrated, one using the Texas Instruments DLP (Digital Light Processing), and the other an LCoS-based (Liquid Crystal on Silicon) SLM (Spatial Light Modulator). These switches demonstrated the benefit of diffraction, by independently achieving high speed, efficiency, and high number of ports. We also demonstrated for the first time that PSK (Phase Shift Keying) modulation format can be used with diffraction-based devices. To be truly effective in diffraction mode, the MEMS pixels should modulate the phase of the incident light. We are presenting our past and current efforts to manufacture a new type of MEMS where the pixels are moving in the vertical direction. The original structure is a 32 × 32 phase modulator array with high contrast grating pixels, and we are introducing a new sub-wavelength linear array capable of a 310 kHz modulation rate. View Full-Text
Keywords: MEMS; MOEMS; diffraction; optical switch; data-communication MEMS; MOEMS; diffraction; optical switch; data-communication
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Blanche, P.-A.; LaComb, L.; Wang, Y.; Wu, M.C. Diffraction-Based Optical Switching with MEMS. Appl. Sci. 2017, 7, 411.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top