The T1-QSFP-DD-400G-SR4-BD is a 400Gb/s Quad Small Form Factor Pluggable-double density (QSFP-DD) optical module that can support 400Gb/s bit rates. It is a parallel Quad Small Form-factor Pluggable—double density (QSFP-DD) Bi-Direction optical module. The module accepts eight host electrical data and transmits them in two groups of optical bi-directional lanes (each group contains 4 pairs of optical lanes) to allow optical communication over optical multi-mode fibers. Reversely, on the receiver side, the module accepts 8 sets of optical input signals and converts them to 8 channels of electrical data.
An optical fiber with an MPO-12 connector can be plugged into the QSFP-DD module receptacle. Proper alignment is ensured by the guide pins inside the receptacle. The cable usually cannot be twisted for proper channel-to-channel alignment. Electrical connection is achieved through an MSA- compliant 76-pin edge-type connector.
The module operates by a single +3.3V power supply. LVCMOS/LVTTL global control signals, such as Module Present, Reset, Interrupt, and Low Power Mode, are available with the modules. A 2-wire serial interface is available to send and receive more complex control signals, and to receive digital diagnostic information. Individual channels can be addressed and unused channels can be shut down for maximum design flexibility.
The product is designed with form factor, optical/electrical connection, digital diagnostic interface according to the QSFP28 Multi-Source Agreement (MSA), and to meet the harshest external operating conditions including temperature, humidity, and EMI interference. The module offers very high functionality and feature integration, accessible via a two-wire serial interface.
The central wavelengths of the 4 CWDM channels are 1271, 1291, 1311 and 1331 nm as members of the CWDM wavelength grid defined in ITU-T G.694.2. It contains a duplex LC connector for the optical interface and a 76-pin connector for the electrical interface. To minimize the optical dispersion in the long-haul system, single-mode fiber (SMF) has to be applied in this module. Host FEC is required to support up to 2km fiber transmission
The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP-DD Multi-Source Agreement (MSA) Type 2. It has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference.