Tower Semiconductor to Make Japan Its Main Optical Chip Production Hub
Tower Semiconductor plans to establish Japan as its primary manufacturing center for optical communication chips, according to a Nikkei Asia report. Company CEO Russell Ellwanger stated that this expansion will position Japan as the company's core production base for optical technology, a key growth driver for Tower in the coming years. This initiative is part of a significant investment plan announced by Tower in mid-July, involving a two-phase expansion of its Japanese operations totaling approximately $4 billion. Tower is investing about $3 billion net, with the Japanese government contributing around $1 billion in support.
The current report clarifies that this expanded capacity will focus on silicon photonics, a technology that integrates optical components onto chips to transmit data using light instead of electricity. This is crucial for AI data centers, where high-speed data transfer between processors and servers is becoming a bottleneck. Silicon photonics offers higher bandwidth, longer communication distances, and lower power consumption per bit, making it vital for growing AI clusters.
Tower's strategy leverages its expertise as a foundry specializing in analog and specialized technologies, rather than competing directly with giants like TSMC or Samsung in advanced digital chip manufacturing. The company has developed an open manufacturing platform for silicon photonics, enabling it to capitalize on the massive investments in AI infrastructure. Tower's silicon photonics technology is already being used in 1.6 terabit optical modules for Nvidia's network protocols, doubling data transfer rates compared to previous generations.
Financially, silicon photonics is becoming increasingly significant for Tower. In May, the company secured contracts representing $1.3 billion in silicon photonics revenue for 2027, with substantial upfront payments for reserved capacity. Customer commitments for 2028 are even higher. In the second quarter, the annual revenue run rate for silicon photonics reached approximately $680 million, up from $180 million a year prior, with Tower expecting to surpass a $1 billion annual run rate by the fourth quarter.
This expansion in Japan also underpins Tower's revised long-term financial targets. The company now aims for revenues of around $3.6 billion and a net profit of $1.2 billion in 2028, an increase from previous targets of $2.8 billion in revenue and $750 million in net profit. The first phase of investment is intended to meet the 2028 targets, while a new factory is planned to support further growth from 2029 onwards.
