**EXHIBIT 11**

 

**TELLABS,INC.**

**COMPUTATIONOF PER SHARE EARNINGS**

(In millions, except per shareamounts)

 
| ** **                                                                                                         | ** ** | **Three Months Ended** | ** ** | **Six Months Ended** | ** ** |
|--------------------------------------------------------------------------------------------------------------------|------------|------------------------|------------|----------------------|------------|
| ** **                                                                                                         | ** ** | **7/1/05**             | ** ** | **7/2/04**           | ** ** | **7/1/05** | ** ** | **7/2/04** | ** ** |
| Numerator:                                                                                                         |       |                   |       |                 |       |   |   |   |   |
| Net earnings                                                                                                       |       | $                      | 41.1       |                 | $          | 49.6 |   | $ | 41.8 |   | $ | 63.0 |   |
|                                                                                                               |       |                   |       |                 |       |   |   |   |   |
| Denominator:                                                                                                       |       |                   |       |                 |       |   |   |   |   |
|                                                                                                               |       |                   |       |                 |       |   |   |   |   |
| Denominator  for basic earnings per share-  Weighted-average shares outstanding                                    |       | 447.7                  |       | 416.1                |       | 451.8 |   | 415.7 |   |
|                                                                                                               |       |                   |       |                 |       |   |   |   |   |
| Effect of  dilutive securities:                                                                                    |       |                   |       |                 |       |   |   |   |   |
|                                                                                                               |       |                   |       |                 |       |   |   |   |   |
| Employee  stock options and awards                                                                                 |       | 3.7                    |       | 4.2                  |       | 3.4 |   | 4.2 |   |
|                                                                                                               |       |                   |       |                 |       |   |   |   |   |
| Denominator  for diluted earnings per share-  Adjusted weighted-average shares outstanding and assumed conversions |       | 451.4                  |       | 420.3                |       | 455.2 |   | 419.9 |   |
|                                                                                                               |       |                   |       |                 |       |   |   |   |   |
| Net earnings  per share – basic                                                                               |       | $                      | 0.09       |                 | $          | 0.12 |   | $ | 0.09 |   | $ | 0.15 |   |
| Net earnings  per share – diluted                                                                             |       | $                      | 0.09       |                 | $          | 0.12 |   | $ | 0.09 |   | $ | 0.15 |   |

 

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