By Rex Crum, MarketWatch

SAN FRANCISCO (MarketWatch) -- Big gains from Finisar Corp. helped lift other optical networkers Thursday as much of the technology sector added to the previous day's gains in late trading.

The Nasdaq Composite Index (RIXF) rose more than 26 points to 2,575, while the Philadelphia Semiconductor Index (SOX) rose 1.7%.

Finisar (FNSR) shares surged 17.5% after the company late Wednesday reported a fiscal second-quarter profit of $33.8 million, or 39 cents a share, on revenue of $241 million. The results compared with a loss of $31.5 million, or 49 cents a share, on $145.7 million in sales in the year-ago period.

The company also forecast a third-quarter profit of 45 cents to 47 cents a share on revenue of $247 million to $262 million.

Finisar makes receivers and transmitters used by the likes of Hewlett-Packard Co. (HPQ) and Cisco Systems Inc. (CSCO).

Spurred on by reaction to Finisar's results, other optical networkers rose. JDS Uniphase Corp. (JDSUD) shares rose 5%; Oclaro Inc. (OCLRD) climbed 7.5%, and Infinera Corp. (INFN) rose 4%.

Among other tech stocks, chip maker Atmel Corp. (ATML) gained more than 6% after Collins Stewart initiated coverage on the stock with a buy rating.

Micron Technology Inc. (MU) advanced 6%, while gains also came from Microsoft Corp. (MSFT), Apple Inc. (AAPL), Google Inc. (GOOG), H-P and Cisco.

 
 
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