Total Revenues by Percentage from Individual Customers Representing Ten Percent or More of Total Revenues (Detail) (Customer Concentration Risk)	12 Months Ended
	Jun. 29, 2012		Jun. 24, 2011		Jun. 25, 2010
JDS Uniphase Corporation
Revenue, Major Customer [Line Items]
Revenues percentage	25.00%		21.00%		16.00%
Oclaro, Inc.
Revenue, Major Customer [Line Items]
Revenues percentage	12.00%		17.00%		17.00%
Finisar Corporation
Revenue, Major Customer [Line Items]
Revenues percentage	10.00%		10.00%		12.00%
Opnext, Inc.
Revenue, Major Customer [Line Items]
Revenues percentage		[1]	10.00%		14.00%
Emcore Corporation
Revenue, Major Customer [Line Items]
Revenues percentage		[1]		[1]	10.00%

[1] Less than 10% of total revenues in the period.