SFP WDM Optical Transceiver

Optical Transceiver

Features:.
1310nm or 1550nm MQW FP or DFB laser diode as transmitter
InGaAs PIN photodiode receiver with 1310nm or 1550nm wavelength input
Meet SFP MSA and SFF-8472 with SC/LC receptacle Hot-pluggable & Digital diagnostic monitoring
Metal enclosure for lower EMI
Distance 10km, 20Km, 40Km with 9/125?m SMF
Data rate up to 1.25Gb/s
LVPECL logic interface simplifies interface to external circuitry
+3.3V Single power supply
Block Diagram of Transceiver
scheme

Application:
Switch to switch interface
High speed I/O for file servers .
Bus extension applications
Transmitter Electro-optical Characteristics
Vcc = 3.1 V to 3.5 V, TC =0℃ to +70 ℃
PARAMETER
SYMBOL
MIN
TYP.
MAX
UNITS
NOTE
Output Optical Power
9/125 μm fiber
Pout
-9
---
-3
dBm
Average
Extinction Ratio
ER
9
---
---
dB

Center Wavelength
λC
1260
1310
1360
nm

Spectral Width (RMS)
Δλ
---
---
2.5
nm

Rise/Fall Time, (20−80%)
Tr, f
---
---
260
ps

Relative Intensity Noise
RIN
---
---
-120
dB/Hz

Total Jitter
TJ
---
---
227
ps

Output Eye
Compliant with IEEE802.3z
Max. Pout TX-DISABLE Asserted
POFF
---
---
-45
dBm

Differential Input Voltage
VDIFF
0.4
---
2.0
V

Receiver Electro-optical Characteristics
Vcc = 3.1 V to 3.5 V, TC =0℃ to +70 ℃
PARAMETER
SYMBOL
MIN
TYP.
MAX
UNITS
NOTE
Optical Input Power-maximum
PIN
0
---
---
dBm
BER < 10−12
Optical Input Power-minimum
(Sensitivity)
PIN
---
---
-21
dBm
BER < 10−12
Operating Center Wavelength
λC
1480

1580
nm

Optical Return Loss
ORL
14
---
---
dB
λ=1480~1580nm
Optical isolation
ISO
---
---
-40
dB
λ=1480~1580nm
Signal Detect-Asserted
PA
---
---
-21
dBm

Signal Detect-Deasserted
PD
-35
---

dBm

Differential Output Voltage
VDIFF
0.5
---
1.2
V

Data Output Rise, Fall Time
(20−80%)
T r, f
---
---
0.35
ns

Receiver Loss of Signal Output
Voltage-Low
RX_LOSL

0
---
0.5
V

Receiver Loss of Signal Output
Voltage-High
RX_LOSH
2.4
---
Vcc
V


Suggested Transceiver Interface
SFP module application diagram



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