SHARE-BASED COMPENSATION EXPENSE (Tables)

12 Months Ended

Oct. 28, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Stock Option Activity

The following table is a summary of Ciena’s stock option activity for the periods indicated (shares in thousands):

	Shares Underlying Options Outstanding	Weighted Average Exercise Price
Balance at October 29, 2022	32	$	30.98
Granted	—	—
Exercised	(22)	$	33.98
Canceled	(3)	$	45.32
Balance at October 28, 2023	7	$	16.94

Schedule of Information with Respect to Stock Options Outstanding

The following table summarizes information with respect to stock options outstanding at October 28, 2023, based on Ciena’s closing stock price on the last trading day of Ciena’s fiscal 2023 (shares and intrinsic value in thousands):

					Options Outstanding and Vested at
					October 28, 2023
					Number	Weighted Average Remaining	Weighted
Range of					of	Contractual	Average		Aggregate
Exercise					Underlying	Life	Exercise		Intrinsic
Price					Shares	(Years)	Price		Value
$	14.38	—	$	18.22	7	0.36	$	16.94	$	178

Schedule of Assumptions for Awards Granted

Assumptions for awards granted during fiscal 2023, fiscal 2022 and fiscal 2021 included the following:

	Year Ended
	October 28, 2023	October 29, 2022	October 30, 2021
Expected volatility of Ciena common stock, which is a weighted average of implied volatility and historical volatility	40.37%	38.27%	41.00%
Historical volatility of Ciena common stock	43.11%	42.17%	42.80%
Historical volatility of S&P Networking Index	30.93%	27.22%	27.30%
Correlation coefficient	0.7781	0.7049	0.6800
Expected life in years	2.89	2.89	2.87
Risk-free interest rate	3.95%	0.94%	0.17%
Expected dividend yield	0.0%	0.0%	0.0%

Schedule of Restricted Stock Unit Activity

The following table is a summary of Ciena’s restricted stock unit activity for the period indicated, with the aggregate fair value of the balance outstanding at the end of each period, based on Ciena’s closing stock price on the last trading day of the relevant period (shares and aggregate fair value in thousands):

	Restricted Stock Units Outstanding	Weighted Average Grant Date Fair Value Per Share		Aggregate Fair Value
Balance at October 29, 2022	4,103	$	55.16	$	197,960
Granted	3,301
Vested	(2,067)
Canceled or forfeited	(415)
Balance at October 28, 2023	4,922	$	53.42	$	201,916

Schedule of Share-based Compensation Expense

The following table summarizes share-based compensation expense for the periods indicated (in thousands):

	Year Ended
	October 28, 2023		October 29, 2022		October 30, 2021
Products	$	4,518	$	3,867	$	3,408
Services	10,470		7,533		5,181
Share-based compensation expense included in cost of goods sold	14,988		11,400		8,589
Research and development	42,331		31,879		21,863
Sales and marketing	35,136		31,280		25,152
General and administrative	37,587		30,435		28,804
Share-based compensation expense included in operating expense	115,054		93,594		75,819
Share-based compensation expense capitalized in inventory, net	413		137		(72)
Total share-based compensation	$	130,455	$	105,131	$	84,336