JDS Uniphase Corp. (Nasdaq: JDSU) has purchased Network Instruments LLC from private equity firm Thoma Bravo LLC for $200 million in cash.

Network Instruments, headquartered in Minnetonka, Minn., develops application-performance monitoring services. The services aim to help information technology teams resolve issues more quickly.

JDSU develops networks and technology that aims to fight counterfeiting, as well as technology used in commercial lasers. The deal should allow the buyer to expand as a provider to the enterprise, data center and cloud networking markets.

San Francisco-based Thoma Bravo is a private equity firm that focuses on investing in software and financial and business services. The firm invested in Network Instruments in May 2012. In November, the firm announced an investment in investment management firm Segall Bryant & Hamill. In October, Thoma Bravo agreed to buy Empirix Inc., a provider of mobile network testing and monitoring services. And before that, in August, the firm closed a $395 million deal for Keynote Systems Inc., a company that provides cloud-based tools for testing mobile applications and websites. 

Credit Suisse served as Thoma Bravo’s financial adviser, while Kirkland & Ellis LLP provided legal advice.