Revenue Recognition - Schedule of Percentage of Total Net Revenue Attributable to Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 02, 2021	Sep. 26, 2020
Concentration Risk
Net revenue	$ 448.4	$ 452.4
Product offerings | OpComms
Concentration Risk
Net revenue	$ 406.0	$ 428.5
Product offerings | OpComms | Revenue
Concentration Risk
Concentration risk, percentage	90.50%	94.70%
Product offerings | Lasers
Concentration Risk
Net revenue	$ 42.4	$ 23.9
Product offerings | Lasers | Revenue
Concentration Risk
Concentration risk, percentage	9.50%	5.30%
Telecom and Datacom | Product offerings | OpComms
Concentration Risk
Net revenue	$ 216.0	$ 261.3
Telecom and Datacom | Product offerings | OpComms | Revenue
Concentration Risk
Concentration risk, percentage	48.20%	57.70%
Consumer and Industrial | Product offerings | OpComms
Concentration Risk
Net revenue	$ 190.0	$ 167.2
Consumer and Industrial | Product offerings | OpComms | Revenue
Concentration Risk
Concentration risk, percentage	42.30%	37.00%