GEOGRAPHIC INFORMATION, PRODUCT GROUPS AND CUSTOMER CONCENTRATION INFORMATION

Geographic Information

The following table shows revenues by geographic area based on the delivery locations of our products:



	Three Months Ended				Six Months Ended
	December 30, 2017		December 31, 2016		December 30, 2017		December 31, 2016
	(Thousands)
Asia-Pacific:
China	$	51,431	$	63,927	$	92,865	$	122,669
Thailand	11,938		32,184		30,013		54,130
Malaysia	1,334		5,377		3,420		11,704
Other Asia-Pacific	5,734		3,028		9,436		6,364
Total Asia-Pacific	$	70,437	$	104,516	$	135,734	$	194,867

Americas:
United States	19,513		17,281		57,203		31,742
Mexico	21,645		8,068		51,131		17,359
Other Americas	3,238		6,211		8,469		8,213
Total Americas	$	44,396	$	31,560	$	116,803	$	57,314

EMEA:
Italy	12,311		6,718		19,237		16,024
Germany	3,336		3,088		7,391		6,377
Other EMEA	7,313		6,084		12,128		11,346
Total EMEA	$	22,960	$	15,890	$	38,756	$	33,747

Japan	$	1,542	$	1,948	3,640		3,478

Total revenues	$	139,335	$	153,914	$	294,933	$	289,406

Product Groups

The following table sets forth revenues by product group:



	Three Months Ended				Six Months Ended
	December 30, 2017		December 31, 2016		December 30, 2017		December 31, 2016
	(Thousands)
100 Gb/s + transmission modules	$	105,371	$	113,835	$	231,012	$	211,606
40 Gb/s and lower transmission modules	33,964		40,079		63,921		77,800
	$	139,335	$	153,914	$	294,933	$	289,406

Significant Customers and Concentration of Credit Risk

For the three months ended December 30, 2017, three customers accounted for 10 percent or more of our revenues, representing approximately 19 percent, 13 percent and 13 percent of our revenues, respectively. For the six months ended December 30, 2017, five customers accounted for 10 percent or more of our revenues, representing approximately 15 percent, 13 percent, 12 percent, 11 percent and 10 percent of our revenues, respectively.

For the three months ended December 31, 2016, four customers accounted for 10 percent or more of our revenues, representing approximately 22 percent, 20 percent, 16 percent and 10 percent of our revenues, respectively. For the six months ended December 31, 2016, four customers accounted for 10 percent of more of our revenues, representing 20 percent, 19 percent, 18 percent and 11 percent of our revenues, respectively.

As of December 30, 2017, four customers accounted for 10 percent or more of our accounts receivable, representing approximately 15 percent, 14 percent, 13 percent and 10 percent of our accounts receivable, respectively. As of July 1, 2017, one customer accounted for 10 percent or more of our accounts receivable, representing approximately 20 percent.