180km~200km 100Mbps SFP Optical Transceiver with 1550nm DFB & APD

1. What Is a 180km~200km 100Mbps SFP Optical Transceiver?

The C-LIGHT 180km~200km 100Mbps SFP optical transceiver is an industrial-grade optical module designed for ultra-long-distance Fast Ethernet (100BASE-FX) communication.

1M/100M/155M/622M SFP丨C-LIGHT

Compared with standard 2km, 20km, 40km, 80km, or even 160km optical modules, 180km~200km modules require a much higher optical power budget, and therefore typically use:

• High-performance 1550nm DFB laser

• APD Avalanche Photodiode receiver (APD Receiver)

• High-gain TIA amplifier

The main objective is to achieve stable transmission over 180km or even 200km+ distances at 100Mbps data rates.

Standard 100Mbps SFP products on the market usually support distances up to 160km, while products beyond 180km are generally based on customized designs.

2. Core Parameters of 180km~200km 100Mbps SFP Optical Transceiver

Typical product specifications of C-LIGHT CLSFP1515ZX180I are as follows:

Since standard 160km products usually provide an optical budget of approximately 35~39dB, 180km~200km products require higher transmit power and improved receiver sensitivity.

3. Why Do 180km+ Optical Modules Usually Use 1550nm/1530nm?

The 1550nm/1530nm wavelength provides the following advantages:

① Lower Fiber Attenuation

The optical loss is approximately 0.2dB/km, making it suitable for long-distance transmission.

② Better for Ultra-Long Distance Applications

With a 47dB optical budget, after considering dispersion penalties, the module can support 180km~200km transmission requirements.

③ More Stable Dispersion Performance

Therefore, most 180km~200km optical modules use a 1550nm/1530nm DFB laser solution for ultra-long-distance communication.

4. Typical Application Scenarios

180km~200km 100Mbps SFP optical transceivers are mainly used in:

• National power grid and power automation

• Railway communication systems

• Oil and gas pipeline monitoring

• Water resource monitoring systems

• Highway surveillance systems

• Urban emergency communication

• Industrial SCADA systems

• Remote site interconnection

• Long-distance industrial Ethernet

• Private telecommunication networks

Although these industries do not require extremely high data rates, they have very high requirements for link stability and transmission distance.

5. Differences Between Standard 100Mbps SFP and 180~200km 100Mbps SFP

6. C-LIGHT Ultra-Long-Distance 100Mbps Optical Solutions

C-LIGHT provides customized ultra-long-distance Fast Ethernet optical transceiver solutions, including:

• 100Mbps SFP 80km

• 100Mbps SFP 100km

• 100Mbps SFP 120km

• 100Mbps SFP 150km

• 100Mbps SFP 180km

• Industrial-grade wide-temperature versions

• DWDM/CWDM customized versions

Product Advantages:

• Industrial wide temperature range (-40℃~85℃)

• High-reliability DFB/APD solution

• Strict compatibility testing

• DDM digital diagnostics support

• OEM/ODM customization

• Support for power, railway, and industrial automation projects

7. How to Select a 180km~200km Optical Transceiver?

The following factors should be considered:

Optical Budget

A minimum system margin of 3~5dB should be reserved.

Receiver Type

APD receiver solutions are recommended for ultra-long-distance transmission.

Link Loss

The total link loss should be calculated based on:

• Fiber attenuation

• Splicing loss

• Connector loss

Compatibility

Confirm compatibility with:

• Ethernet switches

• Industrial equipment

• OLT/ONU platforms

Environmental Requirements

For outdoor and industrial environments, industrial-grade wide-temperature versions are recommended.

8. Summary

The 180km~200km 100Mbps SFP optical transceiver is an ultra-long-distance Fast Ethernet optical communication product.

With a 1550nm DFB laser, high-sensitivity APD receiver, and larger optical link budget, it can meet long-distance transmission requirements in applications such as:

• Power automation

• Railway communication

• Industrial automation

• Operator private networks

For projects requiring stable, reliable, and low-bandwidth long-distance communication, 180km~200km SFP optical transceivers still provide significant application value.

9. Frequently Asked Questions (FAQ)