EPON OLT OPTICAL SFP MODULE

The GEPON OLT transceiver is the high performance module for single fiber,1490nm continuous-mode transmitter and 1310nm burst-mode receiver.

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INFORMATION

Description

The BD-4311S-E2CDA is the high performance GEPON SFP module for single fiber by using 1490nm continuous-mode transmitter and 1310nm burst-mode receiver. It is optical line terminal(OLT) for IEEE Std 802.3ah-2004 1000BASE-PX20. The optical transceiver is compliant with the Small Form- Factor Pluggable (SFP) Multi-Source Agreement (MSA).

The transmitter section uses a 1490nm DFB LD with automatic power control (APC) function and temperature compensation circuitry to ensure stable extinction ratio over all operating temperature range. and is ClassⅠlaser compliant IEC825 and CDRH standards.The receiver has a hermetically packaged APD-TIA (trans-impedance amplifier) pre-amplifier and a limiting amplifier with LVPECL compatible differential outputs.

Feature

● Single Fiber Transceiver with single mode SC receptacle

● 1490nm continuous-mode 1.25G/s transmitter with DFB laser

● 1310nm burst-mode 1.25G/s receiver with APD-TIA

● Single 3.3V power supply

● LVPECL compatible data input /output

● Support more than 24dB dynamic range

● Continued mode received signal strength indication (RSSI) output

● Complies with IEEE Std 802.3ah-2004 1000BASE-PX20

● Digital diagnostic interface compliant with SFF-8472 Rev 9.4 ,

● Complies with RoHS directive (2002/95/EC)

● Operating case temperature: 0 to +70C

Applications

Gigabit Ethernet Passive Optical Network (GEPON) OLT

Optical and Electrical Characteristics

Parameter		Symbol	Min	Typical	Max	Unit	Notes
Transmitter
Data Rate				1.25		Gb/S
Centre Wavelength		λc	1480		1500	nm
Spectral Width		∆λ		0.4	1	nm
Average Output Power(BOL)		Pout	3		7	dBm	1
Extinction Ratio		ER	9			dB
Average Launch Power-OFF Transmitter		Poff			-40	dBm
Optical Eye Diagram		Compliant with IEEE802.3ah-2004 PX20
Input Differential Impedance		Z_IN	90	100	110	Ω
TX Disable	Disable		2.0		Vcc	V
TX Disable	Enable		0		0.8	V
TX Fault	Fault		2.0		Vcc	V
TX Fault	Normal		0		0.8	V
Receiver
Data Rate				1.25		Gb/S
Centre Wavelength		λc	1260		1360	nm
Receiver Sensitivity		Sen			-28	dBm	3
Receiver Overload		Sat	-6			dBm	3
Receiver Burst Dynamic Range			22			dB
Receiver Reflectance					-20	dB
LOS De-assert Level		LOS_D			-29	dBm
LOS Assert Level		LOS_A	-45			dBm
Reciever Power DDM (RSSI) Error		RXDDM			+/-3	dBm