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QSFP+ Transceiver
Description
QSFP+ Transceiver
F-tone QSFP+ (Quad Small Form-factor Pluggable Plus) is a new Multi-Source Agreement (MSA) for high speed application, such as 40G-BASE, which provide four channels of data in one pluggable interface. Each channel is capable of transferring data at 10Gbps and supports a total of 40Gbps.
The 40Gbps QSFP+ transceiver is well suited for Infiniband and 40GBASE-SR4 / 40GBASE-LR4 applications. It combines the higher density attractions of parallel modules with some of the key advantages normally associated with SFP+ based modules. It is intended for use short reach applications in switches, routers and data center equipment where it provides higher density and lower cost when compared with standard SFP+ modules.
FTCQ-8540G-02 Series QSFP SR4 / QSFP+ SR4 / QSFP 40G SR4 It is designed to operate over multimode fiber systems using a nominal wavelength of 850nm. The electrical interface uses a 38 contact edge type connector. The optical interface uses an 8 or 12 fiber MTP (MPO) connector.
FTCQ-1640G-10 Series QSFP LR4 / QSFP+ LR4 / QSFP 40G LR4 It is designed to operate over singlemode fiber system using four 10Gbps CWDM channel in 1300 band. Which is based on two LC connectors for optical connectivity and supports 40Gbps data rate links of up to 10km.
FTCQ-1640G-20 Series QSFP LR4 / QSFP+ LR4 / QSFP 40G LR4 It is designed to operate over singlemode fiber system using four 10Gbps CWDM channel in 1300 band. Which is based on two LC connectors for optical connectivity and supports 40Gbps data rate links of up to 20km.
FTCQ-1640G-40 Series QSFP ER4 / QSFP+ ER4 / QSFP 40G ER4 It is designed to operate over singlemode fiber system using four 10Gbps CWDM channel in 1300 band. Which is based on two LC connectors for optical connectivity and supports 40Gbps data rate links of up to 40km.
Application:
- High-speed interconnects within and between switches, routers and transport equipment
- Server-Server Clusters, Super-computing interconnections
- Proprietary backplanes
- Interconnects rack-to-rack, shelf-to-shelf, board-to-board, board-to-optical backplane
- 40GBASE-LR4 Ethernet links
- 10GBASE-SR applications
- 40GBASE-SR4 applications
- 40GBASE-ER4 Ethernet links
- InfiniBand SDR, DDR and QDR applications
Features:
- QSFP+ MSA, SFF-8436 compatible
- Four independently addressable transmit and receive channels
- Highly compact: savings of 60% on edge and board usage compared to four comparable SFP+ modules
- Electrically hot-pluggable
- XFP-like latch mechanism for ease-of-insertion
- Digital Diagnostics Monitoring Interface. allows customer management and monitoring of key modules parameters, analogous to SFP+
- Optical connectivity via industry standard MPO/MTP terminated fiber ribbon
Ordering information:
| Package | Part No. | Data Rate | Wavelength | Interface | Temp. | DDMI |
| 40GBASE QSFP+ | FTCQ-8540G-02 | 40Gbps | 850nm | MPO/MTP | Standard | YES |
| 40GBASE QSFP+ | FTCQ-1640G-10 | 40Gbpcs | CWDM | LC/LC | Standard | YES |
| 40GBASE QSFP+ | FTCQ-1640G-20 | 40Gbpcs | CWDM | LC/LC | Standard | YES |
| 40GBASE QSFP+ | FTCQ-1640G-40 | 40Gbpcs | CWDM | LC/LC | Standard | YES |
QSFP Wiki
The Quad (4-channel) Small Form-factor Pluggable (often abbreviated as QSFP or QSFP+) is a compact, hot-pluggable transceiver used for data communications applications. It interfaces a network device motherboard (for a switch, router, media converter or similar device) to a fiber optic cable. It is an industry format jointly developed and supported by many network component vendors, supporting data rates from 4x10 Gbit/s. The format specification is evolving to enable higher data rates; as of May 2013, highest supported rate is 4x28 Gbit/s.
The QSFP specification supports Ethernet, Fibre Channel, InfiniBand and SONET/SDH standards with different data rate options. QSFP+ transceivers are designed to support Serial Attached SCSI, 40G Ethernet, QDR (40G) and FDR (56G) Infiniband, and other communications standards. QSFP modules increase the port-density by 3x-4x compared to SFP+ modules.
QSFP has 38 pins with 4 high-speed TX pairs (CML-I) and 4 high-speed RX pairs.
SFF Committee (May 10, 2013). "SFF Committee Specification SFF-8635 for QSFP+ 10 Gb/s 4X Pluggable Transceiver Solution (QSFP10)"
SFF Committee (May 10, 2013). "SFF Committee Specification SFF-8665 for QSFP+ 28 Gb/s 4X Pluggable Transceiver Solution (QSFP28)"
INF-8438i Specification for QSFP (Quad Small Formfactor Pluggable) Transceiver Rev 1.0 November 2006
SFF-8436 Specification for QSFP+ 10 Gbs 4X PLUGGABLE TRANSCEIVER Rev 4.8 October 31, 2013
Inside QSFP LR4
With a port density of three times higher than traditional SFP transceivers, the QSFP can be used to replace four standard SFP modules in space that is only 30 percent larger than a single SFP; The QSFP requires approximately the same front-panel space of an XFP module. Due to the increased capabilities, over 3X (3.11) times more transceivers can be placed in a given area on a switch or product. The QSFP's unique design repackages the existing SFP transceiver in a way which utilizes a 12-fiber ribbon instead of individual fibers.
Benefits of QSFP
- Port Density nearly 3x higher than SFP module; Uses approximately same front panel space as XFP module
- Support of Ethernet, Fibre Channel, Infiniband and SDH/SONET with data rates up to 5 Gb/s
- Transceiver Package and Electrical/Optical Connectors derived from designs currently in production
- Industry first Z-pluggable parallel optics transceiver module with multi-vendor support
TX/Sensetivity QSFP
Single mode:
| Parameter | Symbol | Min. | Typical | Max. | Unit |
| SMF | L | - | 10&20 | - | km |
| Aggregate Bit Rate | BRAVE | - | 41.25 | - | Gbps |
| Per Lane Bit Rate | BRLANE | - | 10.3125 | - | Gbps |
| Transmitter | |||||
| Channels wavelength | ¦ËC | 1264.5 | 1271 | 1277.5 | nm |
| 1284.5 | 1291 | 1297.5 | |||
| 1304.5 | 1311 | 1317.5 | |||
| 1324.5 | 1331 | 1337.5 | |||
| -20dB spectral width | ?¦Ë | - | - | 1 | nm |
| Average Launch Power, Each Lane for 20km*(note3) | Pout/lane | -4 | - | 2.3 | dBm |
| Average Launch Power, Each Lane for 10km*(note3) | Pout/lane | -7 | - | 2.3 | |
| Extinction Ratio | Er | 3.5 | - | - | dB |
| Output Optical Eye*(note4) | IEEE 802.3ba-2010 Compliant | ||||
| Receiver | |||||
| Channels wavelength | ¦ËC | 1264.5 | 1271 | 1277.5 | nm |
| 1284.5 | 1291 | 1297.5 | |||
| 1304.5 | 1311 | 1317.5 | |||
| 1324.5 | 1331 | 1337.5 | |||
| Damage Threshold | 3.3 | - | - | dBm | |
| Receiver sensitivity in OMA, each lane | Pmins | - | - | -11.5 | dBm |
| Maximum Receive Power, each lane | Pmax | 2.3 | - | - | dBm |
| Receiver reflectance | Rr | - | - | -26 | dB |
| LOS De-Assert | LOSD | -11.5 | dBm | ||
| LOS Assert | LOSA | -20 | dBm | ||
For more details and updated spec please refer to pdf.
MultiMode mode:
| Parameter | Symbol | Min. | Typical | Max. | Unit |
| OM3 MMF | L | 0.5 | - | 100 | m |
| Aggregate Bit Rate | BRAVE | - | 40 | - | Gbps |
| Per Lane Bit Rate | BRLANE | - | 10.3125 | - | Gbps |
| Transmitter | |||||
| Center Wavelength | ¦ËC | 840 | 850 | 860 | nm |
| RMS spectral width | RMS | - | - | 0.65 | nm |
| Average Launch Power, Each Lane*(note3) | Pout/lane | -7.6 | - | 2.4 | dBm |
| Transmit OMA, per Lane | TX_OMA/lane | -5.6 | - | 3 | dBm |
| Difference in launch power between any two lanes(OMA) | - | - | 4 | dB | |
| Peak power, each lane | - | - | 4 | dBm | |
| Transmitter and dispersion penalty, each lane | TDP/lane | - | - | 3.5 | dB |
| Extinction Ratio*(note4) | ER | 3 | - | - | dB |
| Optical Return Loss Tolerance | - | - | 12 | dB | |
| Average launch power of OFF, each lane | - | - | -30 | dBm | |
| Output Optical Eye*(note4) | IEEE 802.3ba-2010 Compliant | ||||
| TX Disable Assert Time | t_off | - | - | 100 | us |
| Receiver | |||||
| Center Wavelength | ¦ËC | 840 | 850 | 860 | nm |
| Damage Threshold | 3.4 | - | - | dB | |
| Stressed receiver sensitivity in OMA, each lane | Pmins | - | - | -5.4 | dBm |
| Maximum Receive Power, each lane | Pmax | - | - | 2.4 | dBm |
| Average power, each lane | RX/lane | -7.9 | - | 1 | dBm |
| LOS De-Assert, OMA | LOSD | - | - | -7.5 | dBm |
| Receiver reflectance | Rr | - | - | -12 | dB |
| LOS Assert | LOSA | -30 | - | - | dBm |
| LOS Hysteresis*(note7) | 0.5 | - | - | dB | |
For more details and updated spec please refer to pdf.
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