Finisar (FNSR -7.5%) is tumbling after posting its FQ2 report. While EPS beat estimates, the company is guiding for FQ3 revenue of $235M-$250M and EPS of $0.20-$0.24, largely below a consensus of $249.9M and $0.26. Other optical component names are falling in sympathy: OCLR -4.5%. OPLK -2%. NPTN -2.3%.