FiberCore, Inc. is engaged in the business of developing, manufacturing and marketing single-mode and multi-mode optical fiber and optical fiber preforms for the telecommunications and data communications industry. The Company's principal operating units are FiberCore Jena A.G. (FCJ), its wholly owned subsidiary in Germany, and Xtal FiberCore Brasil S.A. (Xtal), its 90%-owned subsidiary in Brazil. FCJ manufactures both multi-mode and single-mode fiber and preforms, with an emphasis on the multi-mode market. Xtal manufactures both single-mode and multi-mode fiber and single-mode preforms, with an emphasis on the single-mode market. Its other operating subsidiaries are FiberCore USA, Inc., FiberCore Thailand, FiberCore Africa (Proprietary) Limited, FiberCore Asia Sdn. Bhd., FiberCore Quarz GmbH, FiberCore Systems, Inc. and Middle East Fiber Cables.