GEOGRAPHIC INFORMATION, PRODUCT GROUPS AND CUSTOMER CONCENTRATION INFORMATION - Revenues by Product Group (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 27, 2014	Dec. 28, 2013
Segment Information [Line Items]
Revenues	$ 86,820	$ 102,914	$ 176,061	$ 199,562
100 Gb/s transmission
Segment Information [Line Items]
Revenues	33,670	19,378	55,000	35,304
40 Gb/s transmission
Segment Information [Line Items]
Revenues	19,300	26,322	41,466	49,254
10 Gb/s and lower transmission
Segment Information [Line Items]
Revenues	32,005	49,828	70,231	100,402
Industrial and consumer
Segment Information [Line Items]
Revenues	$ 1,845	$ 7,386	$ 9,364	$ 14,602