1.25G SFP 1550nm 100km

Q: What are Single-Mode SFP and Multimode SFP?

A: Single-Mode SFP

• Fiber Type: Single-Mode Fiber (SMF) utilizes a single mode of light to propagate through the fiber, meaning there is only one light path, typically from a laser source.
• Fiber Core Diameter: SMF has a smaller core diameter, usually around 9 microns.
• Distance: Single-Mode SFPs can transmit data over long distances, generally up to 150 kilometers, depending on the SFP model and its optical budget.
• Speed and Bandwidth: SMF offers higher bandwidth compared to multimode fiber, and due to the single light path, experiences no modal dispersion, thereby supporting higher data transfer rates.
• Color Coding: Single-Mode SFPs are typically identified by a blue colored boot or coding.

Multimode SFP

• Fiber Type: Multimode Fiber (MMF) allows multiple modes or light paths to propagate through the fiber, causing different mode delays. This typically employs an LED-based light source but can also be laser-optimized for enhanced performance in later generations of multimode fibers.
• Fiber Core Diameter: MMF has a larger core size, typically 50 or 62.5 microns, to accommodate multiple light paths.
• Distance: Multimode SFPs are suited for shorter distances, generally up to 2 kilometers, though most are used for lengths under 600 meters.
• Speed and Bandwidth: Multimode SFPs provide high bandwidth over short distances, but the bandwidth potential decreases with cable length due to modal dispersion.
• Color Coding: Multimode SFPs generally have a black or beige boot, whereas enhanced 10Gbps versions (OM3/OM4) are aqua-colored.

Q: What is the warranty period for a 1.25G SFP transceiver?

A: Our optical modules come with a 3-year warranty. It specifically covers defects arising during normal use and does not apply to malfunctions or failures resulting from misuse, abuse, neglect, modifications, power issues, failure to follow product instructions, natural disasters, or improper installation, operation, or repair by non-Walsun or unauthorized Walsun service providers.