Optical transceivers are important components in modern networking because they provide connectivity between network equipment and fiber or copper infrastructure. Different network environments require different speeds, fiber types, transmission distances, and transceiver form factors. The Finisar range listed by NextGen Networks includes several options for enterprise networks, data centers, telecom infrastructure, Ethernet, Fibre Channel, and high-speed data connectivity.
The Finisar SFP Optical Transceiver range includes standard SFP modules, 10G SFP+ transceivers, QSFP and QSFP28 modules, QSFP-DD transceivers, copper SFP modules, and active optical cables. The product page also lists a wide selection of Finisar model numbers for different networking requirements.
What Is an SFP Optical Transceiver?
SFP stands for Small Form-factor Pluggable. An SFP transceiver is a compact networking component used to provide connectivity through compatible network equipment. SFP modules are commonly used with networking hardware where modular connectivity is required.
The Finisar product range includes SFP modules that support Gigabit Ethernet and Fibre Channel, as well as SFP+ products designed for 10-Gigabit Ethernet applications. The exact capabilities depend on the individual model, so checking the model number and technical specifications is important before selecting a transceiver.
Finisar Transceiver Product Range
The Finisar page contains a broad list of optical transceiver models. It includes products across different form factors and networking applications.
Some of the specifically described products include:
- FTLX1471D3BCL – a 10Gb/s SFP+ optical transceiver designed for 10-Gigabit Ethernet connections up to 10 km over single-mode fiber.
- FTLX8574D3BCL – a 10Gb/s SFP+ optical transceiver designed for 10-Gigabit Ethernet connections over multimode fiber.
- FTLX8574D3BCV – a 1G/10G dual-rate SFP+ transceiver designed for Gigabit and 10-Gigabit Ethernet over multimode fiber.
- FTLF8519P3BNL – an SFP optical transceiver compatible with Gigabit Ethernet and Fibre Channel.
- FTCD1323E1PCL – a 400G QSFP-DD transceiver designed for 400 Gigabit Ethernet connections up to 10 km over single-mode fiber.
- FTLC9558REUM – a 100G QSFP28 transceiver designed for 100 Gigabit Ethernet over multimode fiber.
- FCLF8522P2BTL, FCLF8520P2BTL and FCLF8521P2BTL – 1000BASE-T copper SFP transceivers for Gigabit Ethernet.
The page also provides a much larger list of Finisar optical transceivers and active optical cables for different networking applications.
FTLX1471D3BCL for 10G Long-Distance Connectivity
The FTLX1471D3BCL is one of the specific Finisar products described on the page. It is a 10Gb/s SFP+ optical transceiver intended for 10-Gigabit Ethernet connections over single-mode fiber.
The listed reach is up to 10 km. The module is consistent with SFF-8431, SFF-8432, IEEE 802.3ae 10GBASE-LR/LW, and 10G Fibre Channel 1200-SM-LL-L. It also provides digital diagnostic capabilities through a 2-wire serial interface as specified in SFF-8472.
For network requirements involving 10G connectivity over single-mode fiber and distances up to 10 km, the specifications of this model make it an important option to consider.
FTLX8574D3BCL for Multimode Fiber
The FTLX8574D3BCL is another 10Gb/s SFP+ transceiver listed on the page. Unlike the FTLX1471D3BCL, it is designed for 10-Gigabit Ethernet connections over multimode fiber.
The product is consistent with SFF-8431, SFF-8432, IEEE 802.3-2012 10GBASE-SR/SW, and 10G Fibre Channel 1200-Mx-SN-I. It also provides digital diagnostic capabilities through a 2-wire serial interface.
This difference between single-mode and multimode products shows why network buyers should look beyond the data rate when selecting an optical transceiver.
Dual-Rate 1G/10G SFP+
The FTLX8574D3BCV is a dual-rate SFP+ transceiver designed for 1-Gigabit and 10-Gigabit Ethernet connections over multimode fiber.
An important detail on the product page is that this module is intended for applications specifically designed for 10G SFP+ ports and 1G/10G SFP+ ports. It is not intended for native 1G SFP ports. This is an important compatibility consideration when selecting a module for an existing switch or networking device.
The module also supports digital diagnostics through a 2-wire serial interface and is designed according to the listed networking specifications.
Gigabit Ethernet and Fibre Channel SFP
The FTLF8519P3BNL is an SFP optical transceiver listed for compatibility with the Small Form-factor Pluggable Multi-Source Agreement (MSA). According to the product information, it is compatible with Gigabit Ethernet as specified in IEEE 802.3 and Fibre Channel FC-PI-2 Rev. 5.0.
Digital diagnostic capabilities are available through the 2-wire serial bus specified in the SFP MSA. The product is also described as RoHS compliant.
This type of module can therefore be considered when the network requirement involves compatible Gigabit Ethernet or Fibre Channel connectivity.
400G QSFP-DD Transceiver
For much higher-speed networking requirements, the Finisar range includes the FTCD1323E1PCL. This LR8 QSFP-DD transceiver is designed for 400 Gigabit Ethernet connections over single-mode fiber, with a listed reach of up to 10 km.
The module is compatible with the QSFP-DD MSA, QSFP28 MSA, IEEE P802.3bs, and parts of IEEE P802.3bm. Digital diagnostic capabilities are available through the I2C interface.
This makes the product range relevant not only to traditional SFP applications but also to high-bandwidth networking environments.
100G QSFP28 Transceiver
The FTLC9558REUM is a 100G QSFP28 transceiver described on the product page for 100 Gigabit Ethernet connections over multimode fiber.
The module is consistent with the QSFP28 MSA and IEEE 802.3bm 100GBASE-SR4 and CAUI-4. It also provides digital diagnostic capabilities through the I2C interface.
This type of high-speed module can be considered for network environments where 100G Ethernet connectivity is required.
Copper SFP Options
The Finisar range is not limited to optical fiber modules. The page also lists FCLF8522P2BTL, FCLF8520P2BTL, and FCLF8521P2BTL 1000BASE-T copper SFP transceivers.
These modules are based on the SFP Multi-Source Agreement and are compatible with Gigabit Ethernet and 1000BASE-T standards specified in IEEE 802.3. The 1000BASE-T physical-layer IC can also be accessed through I2C, providing access to PHY settings and features.
For networks that use compatible copper Ethernet infrastructure, these modules provide an alternative to fiber-based SFP connectivity.
Finisar Active Optical Cables
The product page also includes active optical cables. One highlighted example is the Quadwire Breakout AOC.
It is described as a 4 × 10 Gb/s parallel active optical cable designed for storage, data, and high-performance computing interconnectivity. The cable uses a QSFP+ module at one end and four separate SFP+ modules at the other end.
The listed reach is up to 30 meters, and the product is intended for applications such as high-density 10G Ethernet, InfiniBand QDR, and other data communications and high-performance computing applications.
How to Select the Right Finisar Module
When choosing a Finisar transceiver, the model number and application requirements should be checked carefully. Important factors include:
- Required data rate
- Single-mode or multimode fiber
- Required transmission distance
- Ethernet or Fibre Channel application
- SFP, SFP+, QSFP28, or QSFP-DD form factor
- Host-device compatibility
- Supported standards
- Diagnostic interface
- Connector and cabling requirements
For example, a 10G module designed for single-mode fiber should not automatically be treated as equivalent to a 10G multimode module. Similarly, the FTLX8574D3BCV has specific port compatibility requirements that should be checked before purchase.
Why Buy Finisar Transceivers from NextGen Networks?
NextGen Networks supplies genuine Finisar optical transceivers and SFP modules for enterprise networks, data centers, and telecom infrastructure across India. The page states that its Finisar range includes standard 1G SFP through high-speed 10G SFP+ products, along with a broader selection of Finisar transceivers.
The company also highlights original inventory, multi-vendor compatibility, fast delivery across India, and technical support for confirming the appropriate Finisar transceiver for a specific switch model. The page states that modules are tested for Cisco, Juniper, Arista, and other major switch platforms.
Final Thoughts
The Finisar SFP Optical Transceiver range covers a wide variety of networking requirements, from Gigabit Ethernet and Fibre Channel to 10G, 100G, and 400G connectivity. The product page includes SFP, SFP+, QSFP28, QSFP-DD, copper SFP, and active optical cable solutions.
The most important step when selecting a module is to match the exact product specifications with the network requirement. Fiber type, data rate, transmission distance, supported standards, form factor, and host-port compatibility can all affect whether a transceiver is suitable.
By checking the exact Finisar model number and its technical specifications before purchasing, network administrators can make a more informed decision and select a module that matches their existing infrastructure.
