Photorefractive Combining and Shaping Properties of Amplitude-Modulated Optical Signals by Two-Wave Mixing in Cu-KNSBN Crystal

Joo-Uk UM  Kwon-Yeon LEE  Nam KIM  Han-Kyu PARK  Sang-Sam CHOI  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E82-C   No.5   pp.758-765
Publication Date: 1999/05/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Opto-Electronics
Keyword: 
two-wave mixing,  KNSBN,  photorefractive combiner,  photorefractive pulse shaping,  

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Summary: 
We propose and describe a new configuration for splitting and combining operations of high-speed amplitude-modulated optical signals between the two interacting beams by using two-wave mixing in photorefractive Cu-doped (K0.5 Na0.5)0.2 (Sr0.61 Ba0.39)0.9 Nb2O6 (Cu-KNSBN) crystal. These operations are simultaneously achieved by changing the intensity ratio of the two incident beams. We also apply this scheme to a photorefractive pulse shaping in the time domain that consists of two amplitude-modulated beams that are coupled automatically through two-beam interactions in the crystal. Some preliminary experimental results are presented and discussed.