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  5. QSFP+ Transceiver

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QSFP+

QSFP+ Transceiver

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Specifications

  • ²úÆ·ÐͺÅ: QSFP+ Transceiver
  • ¼æÈÝÆ·ÅÆ: ȫϵÁÐ
  • ·â×°ÀàÐÍ: QSFP+
  • ´«ÊäËÙÂÊ: 41.25
  • ´«Êä¾àÀë: up to 80km
  • ·¢É䲨³¤: 850nm/CWDM
  • ÎüÊÕ²¨³¤: 850nm/CWDM
  • ÊÂÇéζÈ: ÉÌÒµ¼¶0¡æ¡«+70¡æ/¹¤Òµ¼¶-40¡æ¡«+85¡æ ¿ÉÑ¡
  • Êý×ÖÕï¶Ï: ´øDDM
  • ÎüÊÕѸËÙ¶È: up to 80km
  • ÎüÊÕѸËÙ¶È: up to 80km

Description

QSFP-LR4-transceiverQSFP+ 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

 qsfps-chema

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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