25G SFP28 CWDM Transceivers

The 25G SFP28 CWDM transceivers are intended for 10 km and 40 km reach service from 24.33 Gbps to 25.78 Gbps CWDM C27–C37 (C27–C33) single mode high-speed communications equipment where low-cost, extraordinary performance and reliability are essential. It consumes low power, operates base on 3.3V DC power supply and is offered in the commercial/extend temperature range. They are compliant with SFP28 MSA, SFF-8431 and SFF-8432.

The low jitter and low bit error rate optical assembly features a C27–C37 (C27–C33) DML laser transmitter and PIN/TIA receiver. It utilizes internal clock and data recovery (CDR) units on transmitter and the receiver chains for low jitter compliance. The differential AC coupled Tx and Rx data interfaces are CML compatible. The device is Class I laser safety compliant.

•    Operating data rate up to 25.78 Gbps
•    10km and 40km transmission distance
•    High sensitivity Pin (APD) photodiode and TIA
•    Rate Adaptation
•    LC duplex connector
•    Hot pluggable 20pin connector
•    Low power consumption: 1.2W (1.5 W)
•    Single +3.3 V ±5% power supply
•    Operating temperature range:
    Commercial 0 °C to +70 °C
    External: -20 °C to +85 °C
•    Power dissipation < 0.7 W

 

Optical characteristic:

 

Unit

LR

ER

Tx Nominal Wavelength

nm

 1271, 1291, 1311, 1331, 1351, 1371

1271, 1291, 1311, 1331

Average output power (min/max)

dBm

-2 / 6

-2 / 6

Wavelenght Drift (min/max)

nm

-6.5 / +6.5

-6.5 / +6.5

Optical Extinction Ratio

dB

3.5

3.5

Rx Center Wavelenght (min/max)

nm

1260 / 1620

1260 / 1620

Receiver sensitivity

dBm

-14

-19

Overload

dBm

1

-5

Maximum distance

km

10

40

Fiber type

-

SMF

SMF

Data rate typ.

Gbps

25.78

25.78

Optical Return Loss (max)

dB

-26

-26

  • 25G Ethernet
  • CPRI Option 10/e (10)
  • Fiber Channel 32GFC
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