Title

25-Channel Nematic Liquid-Crystal Optical Time-Delay Unit Characterization

Abstract

A 25-channel, 1-bit, free-space, nematic liquid crystal (NLC) spatial light modulator (SLM)-based optical time delay unit (OTDU) is demonstrated with worst case electrical signal-to-noise ratios (SNR‘s) ranging from 50–60 dB for various delay/no-delay modes of operation and with a worst case -42.3-dB electrical channel isolation/crosstalk level. For comparison, single channel performance neglecting crosstalk noise but including within-channel leakage noise gives electrical SNR's from 74–85 dB, indicating that the leakage signal in this OTDU is minimal compared to crosstalk. To lower crosstalk, path-difference compensated imaging optics must be used by the OTDU. © 1995 IEEE.

Publication Date

1-1-1995

Publication Title

IEEE Photonics Technology Letters

Volume

7

Issue

11

Number of Pages

1285-1287

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/68.473473

Socpus ID

0029408738 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0029408738

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