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Singlemode – Multimode Media Converter


  •  Converts between single & multimode fiber

  •  850 nm 1310 nm 1550 nm versions

  •  Fast Ethernet & Gigabit Ethernet types

  •  STM-1, STM-4 support, protocol free

  •  Various distances up 120 km

  •  Universal - Can be used in Chassis as well

  •  MTU size 1536 or jumbo frame (option)


Internal 1x9 type fiber transceivers based universal & protocol free singlemode to multimode media converter


It happens right? Somehow cable laid is singlemode, but equipment ordered uses multimode lasers instead. Or, you need to connect your old ATM/STM-1 based access router or multiplexer to another device, but one of them uses 1310 nm lasers, and your's are 850 nm. While sometimes you really can try use single mode laser over multimode cables (we explain this here) in most cases you will need a singlemode multimode converter, and this exactly what FB-SM-MM does! Applications really are infinite, to mentio such like:

  • As FTTx CPE device at users home

  • Oil/Gas industries - monitoring & alarm systems

  • CCTV industries - IP cameras, Fingerprint devices & beyond

  • Large and Medium/SOHO business users - creating own LAN & WAN's

  • Special cases, when single conversion (not paired) must be done.

singlemode multimode converter
FB-MM-SM, can be used in following ways :

  • As Wavelength Switch Device:It can provide date transmission between two wavelength, such as 1310nm↔1550nm、1310nm↔850nm、850nm↔1550nm

  • This kind of device also can be used as 2R repeater or distance booster

  •  Mode Switch Device: It can provide date transmission between multi mode (850mm,1310mm)and single mode (1310mm,1550mm),This kind of device also can be used as positive power enlarge device.

  • Fiber Switch Device: It can provide the date transmission between single –fiber and dual –fiber.

  • Switch different wavelength and two types of mode .

  • Our company can provide this kind of device with different date rates (155M - used in Fast Ethernet 10/100Mbit/s and STM-1, 622M, used in STM-4, and 1.25G used in Gigabit Ethernet).

  • Longest distance can be 120km, using 1550 nm, and multimode ports can be ordered with 850nm or 1310nm support.


Detailed Features

  • Supporting single fiber by double directions transmission;

  • According to any agreement between different dates.

  • Fulfilling medium convert between single-mode fiber and multi-mode fiber or extending fiber transmission distance, the wave length may be 850nm、1310nm or 1550nm.

  • Supporting medium convert between 100M fast speed Ethernet, 1000M Ethernet, or extending transmission distance.

  • The longest transmission distance of multi-mode is 2KM; The longest transmission distance of single-mode is 120KM.

  • WDM single fiber versions are available

  • As optical receiving and sending model with good optical character, electrical character, date transmits steady, and it can work for long time..

  • The transmission of optical mode 155M is above 30db and optical mode 1.25G is above 25db.

  • As it is manufactured by assembly line with advanced jointing, model works steady ,date transmits stably, and its anti - interference is outstanding.


Singlemode Multimode Converter general specification

  • Fiber A: single- fiber port

  • Fiber B: multi-fiber port

  • LED:power*2  FIBER A、FIBER B

  • Standard:IEEE 802.3

  • Port:SC

  • Power:DC 5V/1A

  • Operating temperature:0℃~70℃

  • Operating humidity:5%~90%

  • Surporting full duplex and half-duplex transmission

  • Demension:26mm(H)*70mm(W)*90mm(D)

  • Single mode :1300nm、1310nm、1550nm

  • Multi mode:1300nm、850nm

  • Transmission fiber:

  • Multi mode:50/125、62.5/125 or 100/140um

  • Single mode:8.3/125,8.7/125,9/125 or 10/125um

  • Transmission distance:

  • Multi mode:2Km

  • Single mode:2~100Km

Cast Studies & Docs

Theory of Single Mode To Multi Mode Converters

Can I use single mode equipment over multimode cable and vice versa?

Ordering Information
FB-SM-MMF/XX-YY 155M (Fast Ethernet 10/100m, STM-1) singlemode multimode converter, AC or DC power
FB-SM-MMG/XX-YY 1.25G (Gigabit Ethernet 1000M) singlemode multimode converter, AC or DC power
XX XX - distance for Single Mode side, such as 20/40/60/80/100/120 km. Note that above 40 km 1550 nm laser is used, below - 1310 nm.
YY Wavelength for Multimode side, can be 1310 nm or 1550 nm, ie YY = 13 or 15.


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