THIS SUBLEASE AMENDMENT AGREEMENT made the 30th day of September 2002
OPTIWAVE CORPORATION/CORPORATION OPTIWAVE
(a Canadian corporation, hereinafter called the "Sublandlord") OF THE
(a Texas, U.S.A. corporation, hereinafter called the "Tenant") OF THE
Sublandlord, the Tenant and the Landlord, the Tenant subleased space on the ground floor of a building located
at 7 Capella Court, Nepean, Ontario ("the Building").
AND WHEREAS the Tenant and the Sublandlord have agreed to amend the Sublease so as to sublet to the
Tenant an additional portion of the Building located on the ground floor as shown on the floor plan attached
hereto and marked as Exhibit A and incorporated herein by reference (the "Additional Leased Premises").
AND WHEREAS the Landlord has agreed to amend the Sublease to include the Additional Leased Premises
upon the following terms and conditions.
NOW THEREFORE in consideration of the rents, covenants and conditions herein reserved and contained, the
parties agree as follows:
1. Except for the amendments expressly set out herein, the Parties confirm that all other terms and conditions
contained in the Sublease remain in full force and effect. More specifically, if the Sublease is not renewed
pursuant to its terms, the Tenant shall vacate the Leased premises and the Additional Leased Premises by August
2. The Gross Rent payable by the Tenant specified in the Sublease will be increased by $2,500.00 per month,
plus GST, as payment for the Tenant's possession and occupation of the Additional Leased Premises identified
on the floor plan in Exhibit A. If the Sublease is renewed on the basis of either Option One or Option Two, the
portion of monthly Gross Rent attributed as payment for the occupation and possession of the Additional Leased
Premises ($2,500.00) shall also be increased by the same percentage as the Gross Rent for the Leased Premises
will be increased for the duration of any