Description
FoxGate 1,25 Gbps, 1490 nm Tx/1310 nm Rx, SC, SFP, 20 km - SFP GEPON transceiver is used in optical line terminal. Transceiver provides two-way data transmission with a symmetrical velocity of 1.25 Gbit / s over a single optical fiber in a passive optical network (PON) at a distance up to 20 km.
Transceiver complies with IEEE 802.3ah-2004 Standard.
Wavelengths: 1490 nm for transmission, 1310 nm for reception.
Optical connector type: SC
Specification
Maximum permissible parameters:
|
Parameter
|
Symbol
|
Min.
|
Max.
|
Unit
|
| Storage Temperature |
Ts
|
-40
|
+85
|
°C
|
| Supply Voltage |
VCC
|
0
|
4.0
|
V
|
| Operating Relative Humidity |
|
5
|
95
|
%
|
Recommended operating conditions:
|
Parameter
|
Symbol
|
Min.
|
Typical
|
Max.
|
Unit
|
| Power Supply Voltage |
Vсс
|
3.13
|
3.3
|
3.47
|
V
|
| Power Supply Current |
Iсс
|
|
|
300
|
mA
|
| Operating Temperature |
Tc
|
0
|
|
+70
|
°C
|
| Relative Humidity |
RH
|
5
|
|
95
|
%
|
| Date Rate |
Upstream/Downstream
|
|
1.25/1.25
|
|
Gbps
|
Performance Specifications (electrical):
|
Parameter
|
Symbol
|
Min.
|
Typ.
|
Max
|
Unit
|
Notes
|
|
Transmitter
|
| LVPECL Compatible Inputs(Differential) |
Vin
|
200
|
|
1600
|
mVpp
|
AC coupled internally
|
| Power Supply Current |
Icc_Tx
|
|
|
200
|
mA
|
|
| Input Impedance (Differential) |
Zin
|
90
|
100
|
110
|
ohms
|
Rin > 100
kohms @ DC
|
| Tx Disable |
|
2
|
|
Vcc
|
V
|
|
| Tx Enable |
|
0
|
|
0.8
|
|
| Tx Fault_High |
|
2.4
|
|
Vcc
|
V
|
|
| Tx Fault_Normal |
|
0
|
|
0.4
|
|
|
Receiver
|
| LVPECL Outputs (Differential) |
Vout
|
400
|
|
1600
|
mVpp
|
DC coupled
outputs
|
| Power Supply Current |
Icc_Rx
|
|
|
150
|
mA
|
|
| Rx_LOS |
High
|
2
|
|
Vcc
|
V
|
|
|
Low
|
0
|
|
0.8
|
V
|
|
Performance Specifications (optical):
|
Parameter
|
Symbol
|
Min.
|
Typical
|
Max.
|
Unit
|
| 9µm Core Diameter SMF |
|
|
20
|
|
km
|
| Date Rate (Upstream/Downstream) |
|
|
1.25/1.25
|
|
Gbps
|
|
Transmitter
|
| Centre Wavelength |
λс
|
1480
|
1490
|
1500
|
nm
|
| Spectral Width (-20dB) |
∆λ
|
|
|
1
|
nm
|
| Side Mode Suppression Ratio |
SMSRR
|
30
|
|
|
dB
|
| Average Output Power |
Pout
|
2.5
|
|
7
|
dBm
|
| Extinction Ratio |
ER
|
9
|
|
|
dB
|
| Tolerance to Tx back reflection |
|
-15
|
|
|
dB
|
| Rise/Fall Time(20%～80%) |
tr/tf
|
|
|
160
|
ps
|
| Output Optical Eye |
IEEE 802.3ah Compliant
|
| Optical Output Power with TX OFF |
P_off
|
|
|
-40
|
dBm
|
|
Receiver
|
| Centre Wavelength |
λc
|
1260
|
1310
|
1360
|
nm
|
| Receiver Sensitivity |
Pmin
|
|
|
-30
|
dBm
|
| Receiver Overload |
Pmax
|
-6
|
|
|
dBm
|
| Receiver Burst-Mode Dynamic Range |
|
15
|
20
|
|
dB
|
| Receiver Reflectance |
CR
|
|
|
-20
|
dB
|
| LOSS Assert Level |
LOSA
|
-44
|
|
|
dBm
|
| LOSS De-Assert Level |
LOSD
|
|
|
-32
|
dBm
|
| Signal Detect Hysteresis |
|
0.5
|
|
6
|
dB
|
| Receiver Settling Time |
Ts
|
|
|
400
|
ns
|
| Damage Threshold for Receiver |
Pin, damage
|
3
|
|
|
dBm
|
| Maximum Receiver Reflectance |
Rx_r
|
|
|
-20
|
dB
|
