EXHIBIT 11

TELLABS, INC.

COMPUTATION OF PER SHARE EARNINGS

In millions, except per share amounts

	Second Quarter				Six Months
	06/29/07		06/30/06		06/29/07		06/30/06
Numerator:
Net earnings	$	29.6	$	53.5	$	55.1	$	105.9
Denominator:
Denominator for basic earnings per share - Weighted average shares outstanding		438.1		447.7		438.1		448.8
Effect of dilutive securities:
Employee stock options and awards		5.2		10.8		5.1		10.8
Denominator for diluted earnings per share - Adjusted weighted average shares outstanding and assumed conversions		443.3		458.5		443.2		459.6
Net earnings per share – basic	$	0.07	$	0.12	$	0.13	$	0.24
Net earnings per share – diluted	$	0.07	$	0.12	$	0.12	$	0.23