FINISAR 100G-QSFP-ER4 40KM Transceiver Module Overview
The FINISAR 100G-QSFP-ER4 40KM Transceiver Module is a high-performance 100G optical transceiver solution designed for long-distance high-speed data transmission over 40 kilometers of single-mode fiber (SMF). This QSFP28 ER4 optical module is widely used in data centers, telecom networks, ISP backbone infrastructure, and enterprise-grade networking systems.
With advanced DWDM technology and IEEE 802.3ba compliance, this Finisar module ensures stable, reliable, and ultra-fast 100Gbps connectivity for mission-critical networking environments.
Full Specifications of FINISAR 100G QSFP-ER4
| Parameter | Specification |
|---|
| Manufacturer | Finisar (Coherent / II-VI) |
| Part Number | FTLC1157RGPL (ER4 family) |
| Form Factor | QSFP28 |
| Data Rate | 100G (103.1 Gb/s aggregate) |
| Transmission Type | 100GBASE-ER4 |
| Reach Distance | Up to 40 km |
| Fiber Type | Single-Mode Fiber (SMF) |
| Wavelength | 1295 nm, 1300 nm, 1305 nm, 1310 nm (LAN-WDM grid) |
| Connector Type | Duplex LC |
| Channel Configuration | 4 × 25Gb/s lanes |
| Modulation Type | PAM4 / NRZ (implementation dependent) |
| Laser Type | EML (Electro-absorption Modulated Laser) |
| Receiver Type | APD (Avalanche Photodiode) |
| Electrical Interface | CAUI-4 |
| Power Supply | 3.3V |
| Power Consumption | ~4.5W – 5W max |
| Operating Temperature | 0°C to 70°C |
| Storage Temperature | -40°C to 85°C |
| Optical Budget | High sensitivity design (ER4 class long reach) |
| FEC Requirement | Required for 40 km operation |
| Digital Diagnostics (DOM/DDM) | Supported (I2C interface) |
| Standards Compliance | IEEE 802.3ba / 802.3bm, QSFP28 MSA |
| RoHS Compliance | Yes |
| Application | Data Center Interconnect (DCI), Metro Ethernet, Long-haul 100G links |
Best Applications in Bangladesh
The FINISAR 100G-QSFP-ER4 module is widely used in:
- ISP backbone networks in Bangladesh
- Data center interconnections (DCI)
- Enterprise core switches and routers
- Telecom operator infrastructure
- Cloud service provider networks
- Large-scale university and research networks
- Financial and banking network systems
This module is ideal for organizations in Bangladesh that require high-capacity, long-distance optical communication solutions.
How to Install FINISAR 100G QSFP-ER4 Module
Installing the transceiver is simple and plug-and-play:
- Power off the networking device (recommended for safety)
- Remove protective dust caps from the module and fiber cable
- Insert the QSFP28 module into the compatible port
- Connect LC duplex fiber patch cord
- Power on the device
- Verify link status via switch/router interface
- Monitor performance using DOM diagnostics tools
Always use proper ESD protection during installation.
Compatibility Devices
The FINISAR 100G QSFP-ER4 transceiver is compatible with:
- Cisco Nexus Series Switches
- Arista 100G Switches
- Juniper QFX Series
- Huawei CloudEngine Series
- Dell EMC Networking Switches
- HP / HPE Enterprise Switches
- Other QSFP28 100G supported devices
It supports multi-vendor interoperability depending on device firmware and configuration.
Why Choose FINISAR 100G QSFP-ER4?
- Industry-leading optical performance
- Proven reliability in enterprise and telecom networks
- Long-distance 40KM transmission capability
- Stable signal integrity for mission-critical systems
- Trusted global brand in optical communication
Where to Buy FINISAR 100G-QSFP-ER4 in Bangladesh
- ✔ Original Finisar product
- ✔ Competitive best price in Bangladesh
- ✔ Technical support & warranty assurance
- ✔ Ready stock availability
Frequently Asked Questions (FAQ)
1. What is the Finisar 100G-QSFP-ER4 40KM transceiver module?
The Finisar 100G-QSFP-ER4 is a 100G QSFP28 long-reach optical transceiver designed for high-speed Ethernet connectivity over long distances up to 40km using single-mode fiber (SMF).
2. What is the maximum distance supported by ER4 100G module?
This module supports up to 40 kilometers transmission distance over SMF, typically using Forward Error Correction (FEC) for stable performance.
3. What type of fiber and connector does it use?
- Fiber Type: Single-Mode Fiber (SMF)
- Connector Type: LC Duplex
This makes it suitable for long-distance telecom and data center interconnects.
4. What wavelength does the ER4 module operate on?
The Finisar ER4 uses LAN-WDM wavelengths around 1270nm to 1330nm, enabling 4-channel wavelength multiplexing for 100G transmission.
5. What data rate does this module support?
It supports a full 100 Gigabit Ethernet (103.125 Gbps) data rate using 4×25G lanes with PAM4 or NRZ signaling depending on implementation.
6. Is the Finisar ER4 module compatible with major network brands?
Yes, it is compatible with leading vendors such as Cisco, Juniper, Huawei, Arista, and others (depending on coding and firmware compatibility).
7. Does this module support hot-swapping?
Yes, it is hot-pluggable, allowing installation or removal without powering down the system.
8. What is the power consumption of this module?
The ER4 module typically consumes around 4.5W maximum, making it efficient for long-reach 100G networking.
9. What is the difference between ER4 and CWDM4 modules?
- ER4: Up to 40km reach, designed for long-distance metro and backbone networks
- CWDM4: Up to 2km reach, optimized for data center interconnect
- ER4 is used for long-haul connectivity, while CWDM4 is for short-to-medium range.
10. Is the Finisar 100G ER4 suitable for Bangladesh networks?
Yes, it is highly suitable for ISP backbone, telecom infrastructure, and enterprise WAN connectivity in Bangladesh, especially for long-distance fiber links.
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