POWER OF ATTORNEY


I, Jan H. Suwinski, of 349 Sage Hall, Ithaca, NY  14853, hereby appoint
James M. Sheehan of 1415 West Diehl Road, Naperville, Illinois 60563,
or Wendy S. Jennings 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 January 3, 2005, 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.

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/ Jan H. Suwinski
_______________________
Jan H. Suwinski


State of Illinois )
			) SS
County of Kane    )


NOTARY

The undersigned, a notary public in and for the above county and state,
this 19th day of January 2005, certifies that Jan H. Suwinski, 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/ Mary T. McShane
_______________________
Notary Public