GigEth regenerators

hi folks, is anybody aware of an optical long-haul gigabit ethernet regenerator box? anything like Cisco Optical Regenerator (COR) OC-48 STM-16 Bi-directional Regenerator http://www.cisco.com/univercd/cc/td/doc/pcat/oc48__l2.htm but for gigeth in this case - we need to connect two sites about 200km apart over dark fiber thanks -- Tomas Daniska systems engineer Tronet Computer Networks Plynarenska 5, 829 75 Bratislava, Slovakia tel: +421 2 58224111, fax: +421 2 58224199 A transistor protected by a fast-acting fuse will protect the fuse by blowing first.