1.6T 2xDR4/DR8 OSFP224 IHS/Closed Finned Top Dual MPO-12

1.6T Transceiver: What They Are and Where They Fit in Next‑Gen AI Data Centers

As AI clusters scale, networks are moving beyond 800G toward 1.6T (1.6 Tb/s) links to keep GPUs and storage fed with data. Tanlink Optics launched 1.6T 2xDR4/DR8 OSFP224 IHS/Closed Finned Top PAM4 1310nm 500m SMF DOM Dual MPO-12/APC InfiniBand XDR Transceiver.

Features:

• Hot-pluggable 1600G OSFP DR8 form factor

• Compliant with OSFP MSA, close top housing

• Compliant with CMIS Rev 5.2

• Built-in DDMI function

• Silicon photonics MZM solution

• 8x106.25GBd PAM4 electrical and optical interface

• Maximum link length of 500m G.652 SMF fiber

• Single 3.3V power supply

• Operating case temperature 0°C to +70 °C

• Power dissipation < 25W

• Dual MPO-12 APC receptacles

• Compliant with RoHS 2.0

• Data center and cloud networks

• 1600G Ethernet and InfiniBand XDR

• Support applications: 1x1600G,2x800G,4x400G, 8x200G

What “1.6T OSFP” Means

OSFP (Octal Small Form-factor Pluggable) is a high-density transceiver form factor designed for very high bandwidth. In 1.6T generations, a common architecture is 8 electrical lanes at 200G-class PAM4 per lane (often referred to as OSFP224 / 224G lane signaling in the ecosystem). The result is an aggregate line rate around 1.6 Tb/s, aimed at switch-to-switch and switch-to-accelerator fabrics in hyperscale and HPC environments.

1.6T OSFP DR8: Parallel Single‑Mode Optics for Short‑Reach 500m Fiber

DR8 generally refers to an optical interface that uses 8 parallel single‑mode fibers (Tx/Rx paths are handled via MPO multi-fiber connectors). In a typical 1.6T DR8 module, the transceiver converts high-speed electrical lanes into parallel optical channels at 1310 nm, delivering high bandwidth over short-reach single-mode fiber.

Some 1.6T designs support splitting the bandwidth into multiple lower-speed links (for example, a 1.6T interface supporting two independent 800G-class logical links in certain platforms). This is often used to simplify migrations where parts of the fabric remain at 800G while core links move to 1.6T.