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OLT optical Transceiver

  • SFP EPON OLT Optical Transceiver
SFP EPON OLT Optical Transceiver

SFP EPON OLT Optical Transceiver

1.Features


l IEEE 802.3-2008 1000BASE-PX20  GEPON ONU side application

l bi-directional transmission with symmetric 1.25Gbps  upstream/downstream

l 1310nm FP laser Burst-mode Transmitter and 1490nm PIN Continuous receiver(with WDM)

l SFP Package with SC Receptacle

l +3.3V single power supply

l Low power consumption

l operating case temperature

Standard:      0℃~+70℃

Industrial :-40℃~+85℃

l Excellent EMI and EMC characteristics

l Digital diagnostic interface compliant with SFF-8472 Rev 9.5

l Compliant with RoHs


2.Applications


l IEEE802.3ah 1000BASE-PX20-D


3.General

The EPON OLT Transceiver module is designed for Gigabit Ethernet Passive Optical NetworkEPON20km transmission. The module incorporates 1490nm continuous-mode transmitter and 1310nm burst-mode receiver. The transmitter section uses a 1490nm DFB laser and an integrated laser driver which is designed to be class-1 eye safe under any single fault. The laser driver includes APC and temperature compensation functions, which are used for keeping the launch optical power and extinction ratio constant over temperature and aging.

The receiver section uses an integrated APD and BM-preamplifier mounted together. The burst-mode receiver is restless and wide dynamic range over 24dB can be obtained under whole operating conditions. The module has the function that indicates receiver burst-power-detect signal. The receiver includes digitalized burst mode optical power monitoring function, which converses any of a received ONU optical power directly in digital, with a Trigger input from system. When rising edge of Trigger detected, the DDM processor starts a burst optical power conversion, the digital result is available via DDM interface after Burst Optical Power Conversion Time. Trigger pulse width should be more than Burst Optical Power Conversion Holding Time. An integrated WDM coupler can distinguish 1310nm input light from 1490nm output light. The metallic package guarantees excellent EMI and EMC characteristics.

4.Order Information

Table-1-Order Information

Part Number

Data Rate

(TX/RX)

Wavelength

(TX/RX)

Index level

Interface

Temp.(1)

GELS-4111-20

1.25G/1.25G

1490nm/1310nm

PX20+

SC

0~+70

GELS-4111-20I

1.25G/1.25G

1490nm/1310nm

PX20+

SC

-40~+85

GELS-4111-20A

1.25G/1.25G

1490nm/1310nm

PX20++

SC

0~+70

GELS-4111-20AI

1.25G/1.25G

1490nm/1310nm

PX20++

SC

-40~+85

GELS-4111-30A

1.25G/1.25G

1490nm/1310nm

PX20+++

SC

0~+70

GELS-4111-30AI

1.25G/1.25G

1490nm/1310nm

PX20+++

SC

-40~+85

(1)The Temp is Operating Case Temperature Range.

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Address: Zone 3-502,Haolang Science Park,Shuangliu, 610207 Chengdu,China

Tel. + 86-18602894430

Fax: 86-028-85124518-812
overseas@gigac.com


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