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SHARE-BASED COMPENSATION EXPENSE (Tables)
 12 Months Ended
Oct. 29, 2022
Share-Based Payment Arrangement [Abstract]  
Summary 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 30, 202183 $32.46 
Granted— — 
Exercised(46)$31.44 
Canceled(5)$51.64 
Balance at October 29, 202232 $30.98 
Summarizes information with respect to stock options outstanding The following table summarizes information with respect to stock options outstanding at October 29, 2022, based on Ciena’s closing stock price on the last trading day of Ciena’s fiscal 2022 (shares and intrinsic value in thousands):
   Options Outstanding and Vested at
October 29, 2022
NumberWeighted
Average
Remaining		Weighted
Range ofofContractualAverageAggregate
ExerciseUnderlyingLifeExerciseIntrinsic
PriceShares(Years)PriceValue
$14.38 — $18.22 13 1.56$16.02 $401 
$32.06 — $46.30 19 0.43$40.67 145 
$14.38 — $46.30 32 0.87$30.98 $546 
Assumptions for awards granted Assumptions for awards granted during fiscal 2022, fiscal 2021 and fiscal 2020 included the following:
Year Ended
 October 29, 2022October 30, 2021October 31, 2020
Expected volatility of Ciena common stock, which is a weighted average of implied volatility and historical volatility38.27%41.00%31.77%
Historical volatility of Ciena common stock
42.17%42.80%36.29%
Historical volatility of S&P Networking Index27.22%27.30%18.40%
Correlation coefficient
0.70490.68000.5891
Expected life in years2.892.872.87
Risk-free interest rate0.94%0.17%1.65%
Expected dividend yield0.0%0.0%0.0%
Summary 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 30, 20214,084 $43.67 $221,733 
Granted2,361  
Vested(2,030)  
Canceled or forfeited(312)  
Balance at October 29, 20224,103 $55.16 $197,960 
Share-based compensation expense The following table summarizes share-based compensation expense for the periods indicated (in thousands):
 Year Ended
 October 29, 2022October 30, 2021October 31, 2020
Products$3,867 $3,408 $3,182 
Services7,533 5,181 3,853 
Share-based compensation expense included in cost of goods sold11,400 8,589 7,035 
Research and development31,879 21,863 16,987 
Sales and marketing31,280 25,152 20,194 
General and administrative30,435 28,804 23,424 
Share-based compensation expense included in operating expense93,594 75,819 60,605 
Share-based compensation expense capitalized in inventory, net137 (72)118 
Total share-based compensation$105,131 $84,336 $67,758