Cisco QSFP-40G-ER4= Transceiver Module

Description

Cisco QSFP-40G-ER4= Transceiver Module

Description:

The Cisco QSFP-40G-ER4 is a hot-swappable optical transceiver module designed for use in Cisco network devices. It supports 40 Gigabit Ethernet (40GbE) connections over single-mode fiber (SMF) for up to 40 kilometers. The module uses four lasers operating at the 1310nm wavelength to transmit and receive data.

Here’s a more detailed explanation of the specifications:

Type: QSFP+ refers to the physical form factor of the module. It’s a standardized format that allows for interoperability between different vendors’ equipment.
Data Rate: 40GbE indicates the speed at which the module can transmit and receive data, which is 40 Gigabits per second (Gbps).
Standard: The module complies with two main standards: 40GBASE-ER4, which is a specific implementation of 40GbE for long-reach applications using SMF, and OTU3, which is an optical transport network standard that can also support 40GbE data rates.
Wavelength: The 1310nm wavelength is commonly used for long-distance data transmission over SMF.
Reach: The module can transmit and receive data for distances up to 40 kilometers.
Fiber Type: The module is designed for use with single-mode fiber (SMF), which uses a narrow light path for longer reach and less signal loss compared to multi-mode fiber.
Connector: The module uses LC duplex connectors, which are commonly used with SMF optic modules. Each connector transmits and receives data on separate strands of fiber.
DOM/DDM Support: DOM (Digital Optical Monitoring) and DDM (Digital Diagnostics Monitoring) are functionalities that allow the module to provide real-time information about its operating parameters, such as optical power levels and temperature. This information can be used for network monitoring and troubleshooting.