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25G 20KM
25G 20KM

Features

l   Supports 25GBASE-LR CWDM (25Gb/s);

l   Lane bit rate 25.78 Gb/s;

l   Up to 20km transmission on SMF;

l   CWDM DFB laser and APD receiver;

l   High speed I/O electrical interface (25GAUI);

l   I2C interface with integrated Digital Diagnostic monitoring;

l   SFP28 MSA package with duplex LC connector;

l   Single +3.3V power supply;

l   Maximum power consumption 1.5 W;

l   Operating case temperature: 0 to +70 °C;

l   Compliant to IEEE 802.3cc Draft3.0, SFF-8402 and SFF-8432;

l   Complies with EU Directive 2011/65/EU (RoHS 6/6);

 


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Transmitter

Parameter

Symbol

Min.

Typical

Max.

Unit

Notes

Center   Wavelength λ0

λ0

1264.5

1271

1277.5

nm


Center   Wavelength λ1

λ1

1284.5

1291

1297.5

nm


Center   Wavelength λ2

λ2

1304.5

1311

1317.5

nm


Center   Wavelength λ3

λ3

1324.5

1331

1337.5

nm


Center   Wavelength λ4

λ4

1344.5

1351

1357.5

nm


Center   Wavelength λ5

Λ5

1364.5

1371

1377.5

nm


Average   Launch Power

PTX_LANE

0

-

3

dBm

1

Optical   Modulation Amplitude

OMA

-4

-

2.2

dBm

1

Launch   power in OMA minus TDP (min)

OMA - TDP

-5

-

-

dBm


Average   Output Power (Laser Turn off)

P0UT-OFF

-

-

-30

dBm


Side   Mode Suppression Ratio

SMSR

30

-

-

dB


Extinction   Ratio

ER

3.5

-

-

dB


Transmitter   and dispersion penalty (TDP)

TDP

-

-

2.7

dB

2

RIN20   OMA

RIN

-

-

-130

dB/Hz


Optical   Return Loss Tolerance

ORLT

-

-

20

dB


Optical   Eye Mask

{0.31, 0.4, 0.45, 0.34, 0.38, 0.4}

2

Receiver

Parameter

Symbol

Min.

Typical

Max.

Unit

Notes

Center   Wavelength

λ

1260

-

1380

nm


Damage   threshold

Pdamage

3

-

-

dBm


Average   Rx Power per Lane, 100GE

PRx _LANe

-13.3

-

2

dBm

3

Receiver   sensitivity (OMA)

POMA_LANE

-

-

-19

dBm

3

Stressed   receiver sensitivity (OMA)

SRS

-

-

-8.8

dBm

3

SRS   eye mask definition

Hit   ratio 5x10-5 hits per sample

{0.31, 0.4, 0.45, 0.34, 0.38, 0.4}

Reflectance

Ref

-

-

-26

dB


LOS   Assert per lane

LOSA

-30

-

-

dBm


LOS De-assert

LOSD

-

-

-21

dBm


LOS Hysteresis

LOSH

0.5

-

-

dB