New Focus Inc. of Santa Clara, Calif., has announced plans to acquire JCA Technology Inc. of Camarillo, Calif., for $600 million. Under the agreement, which is expected to close this year, New Focus would purchase JCA for $575 million in common stock and $25 million in cash. JCA manufactures data drivers, and clock and power amplifiers, and provides custom solutions for optical communications applications. New Focus also reported signing an agreement to purchase Globe Y. Technology Inc. of Fremont, Calif., for $50 million in common stock. Globe Y. Technology, a manufacturer of fused fiber coupling equipment, would operate as a wholly owned subsidiary of New Focus. This deal is scheduled to close in January 2001.