Tyco Cuts 1,000 Jobs at Fiber-Optics Unit

Tyco International Ltd. cut 1,000 jobs, or 44% of the work force, at its TyCom fiber-optic cable unit because of declining demand from telecommunications companies.

The job cuts at TyCom, the biggest maker of undersea fiber-optic cable, were planned for weeks and aren’t related to the plunge in Tyco’s shares and bonds since it announced a plan to split into four companies, the company said.

Shares of Tyco, based in Bermuda and run from Exeter, N.H., rose $2.13 to $28.05 on the NYSE.