SINGAPORE–(BUSINESS WIRE)–#5G–Rain Tree Photonics Pte. Ltd. (RTP), a silicon photonics chip maker for hyperscale data-centers and 5G today announced the availability of 800G silicon photonics-based solutions for 800G-DR8 and LPO optical modules. The 800G-DR8 solutions have already been validated in modules while validation is ongoing for LPO. RTP’s 800G silicon photonics engines come in two versions – a single chip version (RTP11008), in which each chip contains eight channels and a dual chip version (RTP1908-D-LD), in which each chip contains four channels.

The photonic engines are built on RTP’s proprietary high-performance silicon photonics integration platform which is uniquely differentiated and well known for its excellent reliability, high yield, ability to deliver in volume and lowest cost. In each chip, the entire photonic circuit is optimized for low optical insertion loss, allowing each laser to serve four channels, reducing overall cost and power consumption. Each chip also features large mode-field-diameter fiber and laser couplers that ensure high yield with standard packaging lines. Uprated laser input couplers capable of handling high continuous optical power levels demonstrate excellent long-term reliability even under extreme over-stress conditions.

A key feature of RTP’s 800G silicon photonics engine is compatibility with a wide range of modulator drivers. They can be driven by drivers integrated within the DSP or by external drivers, which provides greater design flexibility to RTP’s customers. Typical TDECQ values of less than 1 dB are achieved over the entire temperature range. RTP’s proprietary modulators also exhibit highly linear characteristics together with intrinsically high S21 bandwidth. This makes RTP’s modulators particularly suitable for linear drive or LPO applications.

Technical Details

Rain Tree Photonics’ RTP11008 and RTP1908-D-LD are part of a family of low-power, high-performance Silicon Photonic engines for 100G/lane applications. Both are functionally similar. RTP11008 integrates all 8 channels onto a single chip whereas RTP1908-D-LD integrates 4 channels onto a single chip. In 800G-DR8 applications, either a single RTP11008 chip or dual RTP1908-D-LD chips should be used. A single RTP1908-D-LD chip can also be used for 400G-DR4 applications. Both feature high-performance, low-drive silicon photonic modulators, working with differential drivers down to 2.4 Vpp, enabling compatibility with a wide range of modulator drivers. The ICs also include integrated photodetectors, low speed phase-shifters, large mode-field-diameter couplers and various low loss optical components.

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About Rain Tree Photonics Pte. Ltd.

Cost and energy-efficient scaling of optical interconnects are increasingly becoming bottlenecks for Cloud and Artificial Intelligence (AI) applications. Rain Tree Photonics’ proprietary Silicon Photonics platform directly addresses these bottlenecks, enabling truly scalable optical interconnect solutions. As a Silicon Photonics chipmaker, Rain Tree Photonics (RTP) fully leverages the fabless eco-system and extends beyond with a unique fabless++ approach. In conjunction with its DFM Silicon Photonics platform and technology IPs, this enables RTP to deliver high-performance, low-power products in volume at low cost. By overcoming various challenges faced by customers when using silicon photonic chips, RTP is able to greatly reduce the development cycle time of customers and help them bring their products to the market quickly. A spin-off from IME, A*STAR, RTP is backed by renowned venture capitalist firms. The team includes a good mix of silicon photonics experts, industry veterans and talented PhDs from world-class universities. RTP is headquartered in Singapore, with a presence in China.

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