OPTICAL STRENGTHENING PRESENTED IN A HOUSE

摘要

PCT No. PCT/GB95/01407 Sec. 371 Date Mar. 20, 1997 Sec. 102(e) Date Mar. 20, 1997 PCT Filed Jun. 16, 1995 PCT Pub. No. WO95/35590 PCT Pub. Date Dec. 28, 1995A packaged optical amplifier assembly includes an erbium doped silica based optical amplifying fiber (330) co-pumped and counter-pumped by a pair of laser diodes (336) as optical pumps. The optical pumps (336) are each coupled to an end (332, 340) of the fiber (330) by reflection from a dichroic mirror (328), the optical signal being collimated and arranged to propagate unguided between the input (306) and the first end (332), and the second end (340) and the output (346), and optical pump light from each optical pump (336) being collimated and arranged to propagate unguided between the optical pump (336) and the end of the fiber (332, 340) to which it is coupled.