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NTT announces breakthrough in KTN crystals

Posted: 30 Sep 2003 ?? ?Print Version ?Bookmark and Share

Keywords:ntt? ktn crystal? optical switch? fiber-optic? networking?

Nippon Telegraph and Telephone Corp. (NTT) cannounced that they have successfully prepared a KTN crystal (KTa1-xNbxO3) that the company claims to have among the highest electro-optic effect reported.

In addition, NTT has developed film growth and lithographic techniques for KTN crystal that can be used to fabricate an optical waveguide claimed to have excellent optical transmission performance. According to NTT, an optical switch using these KTN waveguides had a low driving voltage less than 1/10 that of conventional optical switches, which shows potential of KTN crystal in terms of optical device performance.





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