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25G/40G Transceivers

  • 25Gb/s SFP28 DWDM 20KM Optical Transceiver Module
25Gb/s SFP28 DWDM 20KM Optical Transceiver Module

25Gb/s SFP28 DWDM 20KM Optical Transceiver Module

  • Product description: ACS-25GE-DWDM-Cxx-ER transceiver is designed for use in 25-Gigabit Ethernet links up to 20km over single mode fiber. The module consists of DWDM EML Laser, APD and Preamplifier in a high-integrated op
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Description

ACS-25GE-DWDM-Cxx-ER transceiver is designed for use in 25-Gigabit Ethernet links up to 20km over single mode fiber. The module consists of DWDM EML Laser, APD and Preamplifier in a high-integrated optical sub-assembly. Digital diagnostics functions are available via a 2-wire serialinterface, as specified in SFF-8472.This module is designed for single mode fiber and operates at a nominal wavelength of 100GHz ITU Grid, C Band DWDM wavelength.

Features

l Up to 25.78Gb/s data links

l DWDM EML transmitter and APD receiver

l 100 GHz ITU channel spacing with integrated wavelength locker

l Up to 20km on 9/125um SMF

l Hot-pluggable SFP28 footprint

l Support Digital Diagnostic Monitoring interface

l Duplex LC/UPC type pluggable optical interface

l RoHS-10 compliant and lead-free

l With CDR function

l Single +3.3V power supply

l Compliant with SFF+MSA and SFF-8472

l Metal enclosure, for lower EMI

l Meet ESD requirements, resist 8KV direct contact voltage

l Case operating temperature

Commercial: 0 ~ +70oC

Industrial: -40 ~ +85oC

Optical Characteristics

The following optical characteristics are defined over the Recommended Operating Environment unless otherwise specified.


Parameter

Symbol

Min.

Typical

Max

Unit

Notes

Transmitter

Optical Wavelength

λC

λc -0.1


λc +0.1

nm

1

Center Wavelength Spacing



100


GHz


Optical Spectral Width

∆λ



1

nm


Average Optical Power

PAVG

0


5

dBm

2

Side Mode Suppression Ratio

SMSR

30



dB


Optical Extinction Ratio

ER

6



dB


Transmitter OFF Output Power

Poff



-30

dBm


Transmitter and Dispersion Penalty

TDP



2.7

dB


Optical Return Loss Tolerance

ORLT



20

dB


Transmitter Eye Mask

Compliant with IEEE802.3ae



Parameter

Symbol

Min.

Typical

Max

Unit

Notes

Receiver

Center Wavelength

λC

1270


1610

nm


Receiver Sensitivity

Sen.



-14

dBm

3

Average Receive Power


-20


-5

dBm


Input Saturation Power (overload)

Psat

-8



dBm


LOS Assert

LOSA

-30



dBm


LOS De-assert

LOSD



-21

dBm


LOS Hysteresis

LOSH

0.5



dB


Damage Threshold

THd

0



dBm


Notes:

1. λc refer to wavelength selection, and corresponds to approximately 0.8 nm.
2. Class 1 Laser Safety per FDA/CDRH and IEC-825-1 regulations.
3. Measured with Light source 1528.77~1563.86nm, ER=4dB; BER =<10^-12 @ PRBS=2^31-1 NRZ.

Wavelength Selection: C-band λc Wavelength Guide Pin Descriptions

Channel

Wavelength (nm)

Frequency (THZ)

Channel

Wavelength (nm)

Frequency (THZ)

C17

1563.86

191.70

C39

1546.12

193.90

C18

1563.05

191.80

C40

1545.32

194.00

C19

1562.23

191.90

C41

1544.53

194.10

C20

1561.42

192.00

C42

1543.73

194.20

C21

1560.61

192.10

C43

1542.94

194.30

C22

1559.79

192.20

C44

1542.14

194.40

C23

1558.98

192.30

C45

1541.35

194.50

C24

1558.17

192.40

C46

1540.56

194.60

C25

1557.36

192.50

C47

1539.77

194.70

C26

1556.55

192.60

C48

1538.98

194.80

C27

1555.75

192.70

C49

1538.19

194.90

C28

1554.94

192.80

C50

1537.40

195.00

C29

1554.13

192.90

C51

1536.61

195.10

C30

1553.33

193.00

C52

1535.82

195.20

C31

1552.52

193.10

C53

1535.04

195.30

C32

1551.72

193.20

C54

1534.25

195.40

C33

1550.92

193.30

C55

1533.47

195.50

C34

1550.12

193.40

C56

1532.68

195.60

C35

1549.32

193.50

C57

1531.90

195.70

C36

1548.51

193.60

C58

1531.12

195.80

C37

1547.72

193.70

C59

1530.33

195.90

C38

1546.92

193.80

C60

1529.55

196.00

Non-ITU

Peak wavelength between 1528.77nm-1563.86

C61

1528.77

196.10

Ordering Information

Part Number

Data Rate (Gb/s)

Wavelength (nm)

Transmission Distance(km)

Temperature (oC) (Operating Case)

ACS-25GE-DWDM-Cxx-ER

25.78

CH17~CH61

20km SMF

0~70 commercial

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