Everything You Need to Know About 1310nm Optical Modules

A 1310nm optical module lets you move data efficiently through fiber optic communication networks. As part of the O-band (1260–1360 nm), it balances low dispersion, stable performance, and cost efficiency. This makes it widely adopted in data centers, enterprise backbones, and metro access networks. In this article, we explore the key characteristics, common applications, and important comparisons related to 1310nm optical modules.

When you need dependable performance, a LINK-PP 1310nm Optical Transceiver gives you a trusted option for your network.

Key Takeaways

• 1310nm optical modules are essential for efficient data transmission in fiber optic networks, especially for medium distances.

• These modules offer low signal loss and minimal distortion, making them ideal for applications in metropolitan area networks and campus settings.

• Choosing the right fiber type, typically single-mode, enhances the performance of 1310nm modules, allowing for longer transmission distances.

• 1310nm lasers support various data rates, from 1Gbps to 100Gbps, providing flexibility for different network needs.

• When selecting a module, consider factors like standards compliance, temperature range, and transmission distance to ensure compatibility and reliability.

Key Characteristics of 1310nm Optical Modules

1310nm optical modules are one of the most widely used solutions in optical communication, particularly for single-mode fiber (SMF) transmission over short to medium distances. Positioned between 850nm (typically for short-reach multimode) and 1550nm (typically for long-haul), the 1310nm wavelength provides an optimal balance between cost, reach, and performance.

1. Center Wavelength

• Typical value: 1310nm (±20nm, depending on module type)

• Belongs to the O-band (Original band: 1260–1360nm), where chromatic dispersion is minimal, making it suitable for medium-distance transmission.

2. Transmission Reach

• LR (Long Reach): up to 10/40km over single-mode fiber (SMF)

• LX (Long Wavelength): often used in Gigabit Ethernet, supporting up to 10 km on SMF, and with mode-conditioning patch cords can also work with MMF over shorter distances.

3. Spectral Characteristics

• Laser Type: FP (Fabry–Perot) or DFB (Distributed Feedback) depending on data rate and reach

• FP Laser: Used in lower-cost modules (1G/2.5G), suitable for short–medium distances

• DFB Laser: Provides narrower spectral linewidth, required for higher speeds (10G and above) and longer distances

• Spectral Width (FP Laser): typically 30–60 nm (FWHM)

• Spectral Width (DFB Laser): typically <1 nm

4. Supported Data Rates and Standards

• 1.25G SFP (1000BASE-LX): up to 10km over SMF

• 10G SFP+ LR: 1310nm DFB laser, reach up to 10km

• 25G SFP28 LR: 1310nm, reach up to 20km

• 100G QSFP28 LR4: uses 4x 25G channels at 1310nm with WDM, supports 10 km SMF

5. Optical Parameters (Typical Values)

• Transmit Optical Power: -8 dBm to +0.5 dBm (10G LR)

• Receiver Sensitivity: around -14.4 dBm (10G LR, BER ≤ 10⁻¹²)

• Extinction Ratio: ≥ 3.5 dB (10G LR)

• Operating Temperature: Commercial: 0°C to +70°C，Industrial: -40°C to +85°C

Advantages and Limitations

Key Benefits of 1310nm Modules

• Low Chromatic Dispersion: Operating in the O-band, 1310nm modules minimize signal distortion over medium distances.

• Cost-Effective: More affordable than 1550 nm solutions for ≤10 km applications.

• Wide Compatibility: Supported by Ethernet, SONET/SDH, OTN, and 5G front-/mid-haul networks.

• Multiple Form Factors: Available as SFP, SFP+, SFP28, QSFP28, CFP, and more.

• Flexible Speeds: Options from 1G to 100G, making upgrades easier.

📌 Best suited for networks that need a balance of reach, cost, and reliability.

Limitations of 1310nm Optical Modules

• Distance Restriction: Standard reach is up to 10 km. Longer links require 1550 nm optics.

• Higher Attenuation: Slightly more signal loss compared with 1550 nm modules, impacting long-haul performance.

• Single-Mode Oriented: Primarily designed for SMF; MMF use requires mode-conditioning cords.

• Not for DWDM: 1310nm modules do not support dense wavelength multiplexing.

📌 For long-haul or DWDM backbone networks, 1550 nm solutions are a better fit.

Applications of 1310nm Optical Module

1310nm optical modules are widely used across data centers, enterprise backbones, campus networks, telecom, and broadcasting environments. Their balance of performance, cost efficiency, and reach makes them a popular choice for medium-distance transmission over single-mode fiber.

Data Centers and DCI

In data centers, 1310nm modules support high-speed interconnects up to 10 km, linking switches, servers, and storage across buildings or campuses. They are commonly deployed in 10G, 25G, and 100G Ethernet applications.

Enterprise and Campus Networks

1310nm modules are also essential in enterprise backbones and campus networks, such as large office buildings, hospitals, and universities. They provide:

• Stable 10 km reach over single-mode fiber

• Lower chromatic dispersion compared to shorter wavelengths (e.g., 850 nm)

• High-speed connectivity between core and distribution switches

📌 They are ideal for creating robust campus-wide networks with minimal signal loss.

Telecom and Broadcasting

In telecom and broadcasting, 1310nm optics support metro access, mobile backhaul, and video transport. Their advantages include:

• Compliance with telecom standards for interoperability

• Stable transmission for video and voice services

• Medium-reach backbone connectivity in urban and suburban areas

📌 Operators deploy 1310nm optics in 5G fronthaul/midhaul, metro links, and broadcasting studios for reliable performance.

1310nm vs 1550nm Optical Modules Comparison

Distance and Attenuation

• 1310nm modules are best for medium-distance links up to 10 km. They provide reliable performance in data centers, campus backbones, and metro access networks, with low but slightly higher attenuation compared to 1550 nm.

• 1550nm modules excel in long-haul transmission (40 km–100 km+), thanks to their very low attenuation. They are widely used in backbone networks and intercity links where signal integrity must be preserved over long distances.

Here is a table that shows the main differences:

Cost and Use Cases

• 1310 nm modules are more cost-effective, making them the standard for short-to-medium transmission in data centers, enterprise backbones, and metro networks.

• 1550 nm modules are more expensive, but they support long-distance transmission and DWDM, making them the choice for telecom backbones and long-haul optical networks.

✅ Quick Guide:

• Choose 1310 nm for cost-efficient ≤10 km links.

• Choose 1550 nm for long-haul (40 km+) and DWDM applications.

Choosing the Right Module

When selecting a 1310nm optical module, consider:

1. Transmission Distance:

• ≤10 km: 1310nm LR modules are optimal

• ≥40 km: consider 1550nm ER/ZR modules instead

2. Data Rate:

Match module to network speed (1G, 10G, 25G, 100G)

3. Laser Type:

FP for 1G/2.5G, DFB for 10G and above

4. Environment:

Choose industrial-grade (-40°C to 85°C) for outdoor/telecom use

5. Compatibility:

Ensure module works with switches/routers from Cisco, Huawei, Juniper, etc.

👉 Explore LINK-PP’s selection of 1310nm optical modules: LINK-PP Optical Transceivers

FAQ

What is the maximum distance you can achieve with a 1310nm optical module?

You can reach up to 10 kilometers with standard 1310nm modules on single-mode fiber. Some extended models support up to 40 kilometers. Always check your module’s specifications for exact distance.

Can you use 1310nm optical modules with multi-mode fiber?

You usually use 1310nm modules with single-mode fiber. Some 1G modules work with multi-mode fiber if you add a mode conditioning patch cord. For best results, choose single-mode fiber.

Which Ethernet standards do 1310nm modules support?

You find 1310nm modules supporting 1G, 10G, 25G, and 100G Ethernet standards. These modules work well for campus, metro, and data center networks. Check your device compatibility before installation.

How do you monitor the performance of a 1310nm optical module?

You use Digital Diagnostics Monitoring (DDM) to track temperature, voltage, and optical power. DDM helps you maintain stable operation and quickly spot issues. Most modern modules include this feature.

See Also

• Buy 1310nm Optical Transceivers Online

• Applications of 1310nm Optical Transceivers

• DFB Laser Definition

• Fabry-Perot Laser Diodes in Optical Modules

• DDM/DOM in Optical Transceivers

• Optical Modules in 5G Networks

• Data Center Interconnect: Definition, Benefits, and Role of Optical Modules