 Shares of Ciena Corp. CIEN, -0.44 charged up 5.8 in premarket trading Thursday, after the optical networking company reported fiscal third-quarter profit that beat expectations and a surprise growth in revenue, and provided an upbeat outlook citing a robust demand environment. Net income for the quarter to July 31 rose to 238.2 million, or 1.52 a share, from 142.3 million, or 91 cents a share, in the year-ago period. 