10G XFP LR 1310nm 10km

Q: What are the differences between XFP and SFP+ optical modules?

A: (1) They differ in appearance, with SFP+ being smaller in size than XFP;

(2) Functionally, XFP modules, compared to SFP+ modules, include signal modulation capabilities, serializers/deserializers, MAC, clock and data recovery (CDR), and electronic dispersion compensation (EDC) features. Therefore, when a switch/router lacks these integrated functions on its motherboard, XFP modules are required to fill the gap.

(3) They adhere to different protocols, with XFP complying with the XFP MSA Agreement, while SFP+ adheres to IEEE 802.3ae, SFF-8431, and SFF-8432 standards.

Q: Can XFP and SFP+ optical modules interconnect?

A: As long as the transmission rate, distance, and wavelength match, they can be interconnected using optical fibers. For example, a 10G XFP optical module with a wavelength of 1310nm and a transmission distance of 10KM can be connected to a 10G SFP+ optical module with the same wavelength and distance. Although the market now offers optical modules with transmission rates up to 200G, this does not mean 10G modules are obsolete; currently, 10G modules remain relevant.

Q: What is an XFP optical module?

A: XFP stands for a 10G optical module’s encapsulation, a standardized packaging for 10Gbps serial optical transceivers. A 10 Gigabit XFP optical module is a hot-pluggable I/O device designed for 10-gigabit ports, featuring an electric interface on the motherboard standardized as XFI, a 10Gbps serial interface. It conforms to 10G Fiber Channel, 10G Ethernet, SONET/OC-192, and SDH/STM-64 standards. XFP modules can support transmission distances up to 100 kilometers.

Q: What is an SFP+ optical module?

A: An SFP+ optical module is a 10Gbps transmission rate module with an SFP+ form factor. This module boasts high density, low power consumption, and lower system construction costs. SFP+ modules are widely applied in 10 Gigabit Ethernet, SDH optical transmission networks, WDM wavelength division multiplexing systems, and single-fiber bidirectional systems. Multi-mode SFP+ modules can transmit up to 300 meters, whereas single-mode modules can reach up to 100 kilometers.

Q: What types of 10G XFP 10-gigabit optical modules are available?

A: 10G XFP 10-gigabit optical modules come in three types: single-fiber XFP modules, dual-fiber XFP modules, and XFP CWDM/DWDM modules. The distinctions are: Single-fiber modules have one port and must be used in pairs, featuring two different wavelengths commonly used in 10G single-fiber modules at 1270nm/1330nm or 1490nm/1550nm. Dual-fiber modules have two ports connecting two fibers with a single wavelength, typically 850nm, 1310nm, or 1550nm. CWDM modules can multiplex about 8-16 wavelengths on a single fiber within the 1270nm-1610nm range. DWDM modules can multiplex up to 45 wavelengths within the C-band spectrum, ranging from 1528.77nm to 1563.86nm.