1 EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-2713, No. 333-52467) of CIENA Corporation of our report dated November 25, 1998 appearing on page 36 of this Annual Report on Form 10-K. PRICEWATERHOUSECOOPERS LLP McLean, VA December 8, 1998 65