Accounts Receivable from Individual Customers that were Equal to or Greater Than Ten Percent of Accounts Receivable (Detail) (Credit Concentration Risk)	12 Months Ended
	Jun. 29, 2012		Jun. 24, 2011
JDS Uniphase Corporation
Concentration Risk [Line Items]
Concentration of risk percentage	17.00%		23.00%
Oclaro, Inc.
Concentration Risk [Line Items]
Concentration of risk percentage	15.00%		14.00%
Opnext, Inc.
Concentration Risk [Line Items]
Concentration of risk percentage	15.00%		10.00%
Emcore Corporation
Concentration Risk [Line Items]
Concentration of risk percentage	12.00%		11.00%
Finisar Corporation
Concentration Risk [Line Items]
Concentration of risk percentage		[1]	10.00%

[1] Less than 10% of total accounts receivable as at the end of period.