The optical networking equipment maker posted a second-quarter net loss of $1.6 million, or 1 cent per share, a narrower loss when compared with the net loss of $3.1 million, or 3 cents a share, for the same quarter a year ago. Excluding non-recurring items, Sycamore posted a profit of $1.4 million, or 1 cent a share. Wall Street expected a break-even quarter with earnings of zero cents per share, according to First Call. Quarterly revenue increased to $29 million from $19.5 million a year ago. Company executives said Sycamore expanded its customer base and product portfolio during the quarter.