Convertible Notes Payable (Tables)

6 Months Ended

Apr. 30, 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:

	April 30, 2012
Description	Carrying Value		Fair Value
0.25% Convertible Senior Notes due May 1, 2013	$	216,210	$	214,859
4.0% Convertible Senior Notes due March 15, 2015 (1)	375,983		410,391
0.875% Convertible Senior Notes due June 15, 2017	500,000		424,063
3.75% Convertible Senior Notes due October 15, 2018	350,000		380,406
	$	1,442,193	$	1,429,719

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