POWER OF ATTORNEY

I, Carl A. DeWilde, of 1415 West Diehl Road, Naperville, Illinois 60563,
hereby appoint James M. Sheehan of 1415 West Diehl Road, Naperville, Illinois
60563, Paul Liebenson of 1415 West Diehl Road, Naperville, Illinois 60563 and
Scott Morgan of 1465 N. McDowell Blvd., Petaluma, California 94954, as
attorney-in-fact to act for me and in my name for the purpose of
completing, signing and filing, in my name and on my behalf, any of the
following forms pursuant to the terms of Securities Exchange Act of 1934 and
the Securities Act of 1933:


	Form 3 - Initial Statement of Beneficial Ownership of Securities

	Form 4 - Statement of Changes of Beneficial Ownership of Securities

	Form 5 - Annual Statement of Beneficial Ownership of Securities

	Form 144 - Notice of Proposed Sale of Securities


This power shall become effective on July 1, 2007, and shall continue in
effect until terminated in writing by me or until either of my attorneys-in-
fact shall die, become legally disabled, terminate their employment with
Tellabs, Inc. or its subsidiaries for any reason, resign or refuse to
act (only as applies to such person, this power shall otherwise remain in
force for the remaining attorneys-in-fact).

I am fully informed as to all the contents of this form and understand the
full import of this grant of powers to either of my attorneys-in-fact.

This Power of Attorney shall supersede any previously granted power related
to the subject matter herein.


/s/ Carl A. DeWilde
___________________________________________
Carl A. DeWilde


State of Texas	               )
		       	       ) SS
County of Collin               )


NOTARY

The undersigned, a notary public in and for the above county and state, this
8th day of August, 2007, certifies that Carl A. DeWilde, known to me to be
the same person whose name is subscribed to the foregoing Power of Attorney,
appeared before me in person and acknowledged signing and delivering said
document as his/her free and voluntary act, for the uses and purposes therein
set forth.


/s/ Donna Malak
___________________________________________
Notary Public