1.6T · OSFP224
1.6T OSFP224 DR8
Form factorOSFP224
Lanes8 × 212.5G PAM4
Reach and fiber500 m, single-mode fiber
ConnectorDual MPO-12/APC (16 fibers)
Max powerup to 25 W
1.6T OSFP224
1.6T OSFP224 2xDR4 Optical Transceiver, 500 m, Dual MPO-12/APC
The 1.6T OSFP224 2xDR4 is a hot-pluggable OSFP module that converts 8 electrical lanes of 200G PAM4 into 8 optical lanes through a silicon-photonics engine. It reaches 500 m on single-mode fiber over dual MPO-12/APC connectors, uses a top closed-fin heat sink, and draws up to 32 W.
Key specifications
| Parameter | Value |
|---|---|
| Aggregate data rate | 1.6 Tb/s (1600 Gb/s) |
| Lanes | 8 × 200G PAM4 (electrical and optical) |
| Center wavelength | 1311 nm (1304.5 to 1317.5) |
| Maximum reach | 500 m, single-mode fiber |
| Optical connector | Dual MPO-12/APC |
| Thermal design | Top closed fin (integrated heat sink) |
| Max power consumption | up to 32 W |
| Optical engine | Silicon photonics |
Mechanical outline
| Parameter | Value |
|---|---|
| Dimensions | 22.58 ± 0.1 mm W × 13.00 mm H (+0.0 / -0.2 mm per drawing); body 116.0 ± 0.3 mm; 149.95 mm with pull tab |
Full specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Average launch power, each lane (minimum is informative) | 2.5 | 3.5 | 4 | dBm |
| Outer optical modulation amplitude (OMAouter), each lane | 1 | 3 | 5 | dBm |
| Extinction ratio, each lane | 3 | 3.5 | 5 | dB |
| Side-mode suppression ratio | 30 | - | - | dB |
| Average launch power of OFF transmitter, each lane | - | - | -15 | dBm |
| RIN (RIN21.4OMA) | - | - | -139 | dB/Hz |
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Average receive power, each lane | -1 | - | 4 | dBm |
| Receive power (OMAouter), each lane | - | - | 5 | dBm |
| Receiver damage threshold, average optical power | 5 | - | - | dBm |
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply voltage | 3.135 | 3.3 | 3.465 | V |
| Pre-FEC bit error ratio | 1×10⁻⁶ | |||
| Post-FEC bit error ratio | 1×10⁻¹² (FEC provided by host) | |||
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Storage temperature | -40 | - | 85 | °C |
| Relative humidity (non-condensing) | 0 | - | 85 | % |
| Parameter | Value |
|---|---|
| Management | CMIS; DDM (temperature, supply voltage, Tx bias, Tx power, Rx power); LOL/LOS; loopback; PRBS; CDB firmware upgrade; adaptive Tx EQ; programmable Rx amplitude, pre- and post-cursor |
| Parameter | Value |
|---|---|
| Laser safety | Class 1, IEC/EN 60825-1:2014; 21 CFR 1040.10 and 1040.11 (Laser Notice 56) |
| ESD (HBM) | 1 kV high-speed pins; 2 kV other pins |
Questions about this module
What is the difference between the 1.6T 2xDR4 and the 1.6T DR8?
Both deliver 1.6 Tb/s across 8 lanes over 500 m SMF via Dual MPO-12/APC. The 2xDR4 features an integrated closed-fin top heat sink and a 32 W maximum envelope. The DR8 features a closed-top housing for cold-plate or riding-heatsink cages, a 25 W maximum power rating, and documented breakout to 2 x 800G DR4 or 8 x 200G DR.
What optical connector does the 1.6T module use?
Both 1.6T OSFP224 modules use a Dual MPO-12/APC optical receptacle supporting 16 active single-mode fibers (8 Tx and 8 Rx).
How many lanes does the 1.6T module use, and what modulation?
The 1.6T 2xDR4 uses 8 lanes of 200G PAM4 (106.25 GBd) on both host electrical and optical interfaces. The 1.6T DR8 operates at 8 lanes of 212.5G PAM4.
Why is 1.6T our primary focus?
1.6T OSFP224 optical transceivers are the critical bottleneck for next-generation AI GPU clusters and remain in tight global supply across fewer than twenty optical manufacturers.
What management and diagnostic telemetry does the 1.6T 2xDR4 support?
It implements CMIS with digital diagnostic monitoring (DDM) for case temperature, 3.3 V supply, laser bias, Tx optical power, and Rx optical power, plus host/media loopback, PRBS generators and checkers, hitless CDB firmware upgrade, adaptive Tx equalization, and programmable Rx output swing.
How much power does the 1.6T module consume?
The 1.6T 2xDR4 has a maximum power rating of 32 W. The low-power silicon-photonics 1.6T DR8 closed-top module is rated at 25 W or less. Both operate from a single 3.3 V supply.
What reach and fiber does the 1.6T module support?
Both 1.6T OSFP224 modules reach up to 500 m over parallel single-mode fiber (OS2 SMF).
What wavelength does the 1.6T module operate at?
The 1.6T 2xDR4 operates at a 1311 nm center wavelength within the 1304.5 to 1317.5 nm O-band window. The 1.6T DR8 is specified at 1310 nm.
What is a 1.6T OSFP224 optical transceiver?
It is our flagship pluggable optical transceiver in the OSFP224 form factor that converts 8 lanes of 200G-class electrical signals to optical signals at 1.6 Tb/s aggregate throughput. We produce two configurations: the 1.6T 2xDR4 (32 W max, integrated heat sink) and the 1.6T DR8 (25 W or less, closed-top).
Related modules
800G · OSFP224
800G OSFP224 DR4 RHS
Form factorOSFP224Lanes4 × 212.5G PAM4Reach and fiber500 m, single-mode fiberConnectorMPO-12/APC (8 fibers used)Max powerup to 16 W
Partner directly with our American division
Discuss 1.6T and 800G distributor allocation, custom White-Label OEM branding, or platform verification directly with Mike Clarke.
Mike Clarkemike@co-pacoptics.com+1 (575) 910-7000