Convertible Notes Payable (Tables)

9 Months Ended

Jul. 31, 2012

Debt Disclosure [Abstract]

Carrying value and estimated current fair value of outstanding convertible notes

The following table sets forth, in thousands, the carrying value and the estimated fair value of Ciena’s outstanding convertible notes:

	July 31, 2012
Description	Carrying Value		Fair Value(2)
0.25% Convertible Senior Notes due May 1, 2013	$	216,210	$	212,967
4.0% Convertible Senior Notes due March 15, 2015 (1)	375,898		422,415
0.875% Convertible Senior Notes due June 15, 2017	500,000		428,750
3.75% Convertible Senior Notes due October 15, 2018	350,000		391,563
	$	1,442,108	$	1,455,695

(1) Includes unamortized bond premium related to embedded redemption feature

(2) The fair value reported above is based on the quoted prices for the notes on the date above.