Convertible Notes Payable (Tables)

12 Months Ended

Oct. 31, 2011

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 current fair value of Ciena’s outstanding convertible notes:

	October 31, 2011
Description	Carrying Value		Fair Value
0.25% Convertible Senior Notes due May 1, 2013	$	216,210	$	215,399
4.0% Convertible Senior Notes, due March 15, 2015 (1)	376,154		388,125
0.875% Convertible Senior Notes due June 15, 2017	500,000		376,875
3.75% Convertible Senior Notes, due October 15, 2018	350,000		347,375
	$	1,442,364	$	1,327,774

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