Convertible Notes Payable (Tables)

3 Months Ended

Jan. 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:

	January 31, 2012
Description	Carrying Value		Fair Value
0.25% Convertible Senior Notes due May 1, 2013	$	216,210	$	214,318
4.0% Convertible Senior Notes due March 15, 2015 (1)	376,069		406,406
0.875% Convertible Senior Notes due June 15, 2017	500,000		411,250
3.75% Convertible Senior Notes due October 15, 2018	350,000		375,375
	$	1,442,279	$	1,407,349

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