Peer-Reviewed Journal Details
Mandatory Fields
Riza, N. A.
1995
November
IEEE Photonics Technology Letters
25-CHANNEL NEMATIC LIQUID-CRYSTAL OPTICAL TIME-DELAY UNIT CHARACTERIZATION
Validated
()
Optional Fields
7
1111
1285
12871285
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.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.
1041-11351041-1135
://WOS:A1995TE02700021://WOS:A1995TE02700021
Grant Details