Revenues from contracts with customers - Schedule of Revenues by End Market and Product (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 27, 2024	Sep. 29, 2023
Disaggregation of Revenue [Line Items]
Revenues	$ 804,228	$ 685,477
Revenue from contract with customer benchmark | Product concentration risk
Disaggregation of Revenue [Line Items]
Revenues, percentage	100.00%	100.00%
Optical communications
Disaggregation of Revenue [Line Items]
Revenues	$ 626,315	$ 533,257
Optical communications | Revenue from contract with customer benchmark | Product concentration risk
Disaggregation of Revenue [Line Items]
Revenues, percentage	77.90%	77.80%
Datacom
Disaggregation of Revenue [Line Items]
Revenues	$ 328,881	$ 242,043
Telecom
Disaggregation of Revenue [Line Items]
Revenues	297,434	291,214
Non-optical communications
Disaggregation of Revenue [Line Items]
Revenues	$ 177,913	$ 152,220
Non-optical communications | Revenue from contract with customer benchmark | Product concentration risk
Disaggregation of Revenue [Line Items]
Revenues, percentage	22.10%	22.20%
Automotive
Disaggregation of Revenue [Line Items]
Revenues	$ 102,741	$ 88,358
Industrial laser
Disaggregation of Revenue [Line Items]
Revenues	35,326	29,915
Others
Disaggregation of Revenue [Line Items]
Revenues	$ 39,846	$ 33,947