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Gigabit Ethernet Fiber Transceiver

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The 7708GT series Gigabit Ethernet Fiber Transceivers provide an economical method of transmitting 10/100/1000Base-T Ethernet channel over optical fiber. The transceiver is IEEE 802.3 10BASE-T, IEEE 802.3u 100BASE-TX and IEEE 802.3ab 1000BASE-TX compliant, mediates between a 10/100/1000BASE-TX segment. A pair of 7708GT transceivers permits full duplex communication over a single optical fiber or dual fiber. There is a built in two port gigabit Ethernet switch that supports a total bandwidth of 1000Mb/s. Diagnostic LEDs provide indication of power, linkage and data reception. The 7708GT series modules support jumbo frames and spanning tree protocol.

Two versions of the 7708GT allow the user to choose the optimal price / performance / features to suit a particular application. The "-F2" version is designed to receive and transmit over two different fibers and has the lowest insertion loss. This version can operate with Multi-mode or Single-mode fiber. The standard version is designed to receive and transmit on two different wavelengths (1310nm and 1550nm) over a single fiber and can operate with Single mode fiber only.


  • Auto negotiation for 10/100/1000 speeds, half/full duplex modes
  • Link status monitoring indicators
  • Optional VistaLINK® enabled for remote monitoring and control
  • Optical output available in 1310nm, 1550nm and up to sixteen CWDM wavelengths in the 1270nm to 1610nm range
  • DWDM (ITU-T G.694.1) wavelengths available
  • Supports multi-mode or single-mode fiber
  • Fully hot-swappable from front of frame with no fiber or Ethernet channel disconnect required
  • SC/PC or FC/PC connector options
  • Jumbo frame support
  • Spanning tree protocol support


Ethernet Input/Output

标准 IEEE 802.3 (10 BaseT), IEEE 802.3u
(100 BaseTX), IEE 802.3ab
Number of Ports 2
端口数目 RJ45
Cable Requirements
10 BaseT UTP category 3,4 or 5 cable up to 328ft/100m (2 pairs)
100 BaseTX UTP category 5 cable up to 328ft/100m (2 pairs)
1000 BaseTX UTP category 5 cable up to 164ft/50m (4 pairs)

Optical Input/Output

Single Fiber version 1 female SC/PC or FC/PC
Dual Fiber (F2) version 2 female SC/PC or FC/PC
Input Wavelengths 1270nm-1610nm
标准 -1dBm
-H version -8dBm
Input Optical Sensitivity
WDM (-W) -21dBm
标准 -23dBm
High Sensitivity (-H) -28dBm
Output Wavelengths
标准 1310nm, 1550nm (nominal)
CWDM 1270nm to 1610nm (ITU-T G.694.2 compliant)
DWDM C-Band (ITU-T G.694.1 compliant)
Output Power
1310nm FP -7dBm ±1dBm
1310nm (-W) -1dBm ±1dBm
1550nm, CDWM (DFB) 0dBm ±1dBm
DWDM (DFB) +7dBm ± 1dBm


电压 12V
功率 8 瓦 (Non DWDM) or 10 瓦 (DWDM)


插槽数 1


Laser Safety Class 1 laser product
Complies with 24 CFR 1040.10 and 1040.11
IEC 60825-1
EMI/RFI Complies with FCC Part 15, Class A
EU EMC Directive


Gigabit Ethernet Fiber Transceiver
7708GT13M-W Single fiber, WDM, 1310nm DFB Tx, Rx on 1550nm
7708GT15-W Single fiber, WDM, 1550nm DFB Tx, Rx on 1310nm
7708GT13-F2 Dual fiber, 1310nm FP Tx & Rx
CWDM (Ordering Information)
7708GTxx-F2 Dual fiber, CWDM Tx
7708GTxx-F2-H Dual fiber, CWDM Tx, High Sensitivity Rx
DWDM (Ordering Information)
7708GTDxxx-F2 Dual fiber, DWDM Tx (Contact Factory for Wavelength Availability)
7708GTDxxx-F2-H Dual fiber, DWDM Tx, High Sensitivity Rx (Contact Factory for Wavelength Availability)


注意 Rear plate and fiber connector must be specified at time of order - eg: [model]+SC+3RU
Connector Suffix
Rear Plate Suffix
+1RU 1RU rear plate for use with 7701FR Multiframe
+SA Standalone Enclosure Rear Plate
+3RU 3RU rear plate for use with 350FR, 7700FR-C or 7800FR Multiframes


350FR Portable Multiframe which holds 7 single slot modules
7700FR-C 3RU Multiframe which holds 15 single slot modules
7800FR 3RU Multiframe which holds 15 single slot modules
7701FR 1RU Multiframe which holds 3 single slot modules
S7701FR 7700 Series Standalone Enclosure