50G LR Optical Fiber Module QSFP28 Transceiver 10KM Duplex LC Connector SMF

Parameter

Symbol

Min.

Typical

Max.

Unit

Notes

Wavelength

λ

1304.5

1311

1317.5

nm

Side-mode suppression ratio

SMSR

30

dB

Average launch power

P_OUT

-4.5

-

4.2

dBm

Average launch power of OFF transmitter

P_{OUT_OFF}

-

-

-30

dBm

Outer Optical Modulation Amplitude (OMAouter)

P_OUTL

-1.5

-

4

dBm

Extinction ratio

ER

3.5

-

-

dB

Launch power in OMAouter minus TDECQ

OMA-TDECQ

-2.9

-

-

dBm

Transmitter and dispersion eye closure for PAM4 (TDECQ)

TDECQ

-

-

3.2

dB

1

Spectrum wavelength

λ _-20

-

-

1

nm

Optical return loss tolerance

ORLT

-

-

15.6

dB

RIN_15.6OMA

RIN

-

-

-132

dB/Hz

Transmitter reflectance

-

-

-26

dB

Parameter

Symbol

Min.

Typical

Max.

Unit

Notes

Wavelength

λ

1304.5

1311

1317.5

nm

Receiver sensitivity (OMAouter)

max(–8.4; SECQ – 9.8)

dBm

1

Stressed receiver sensitivity (OMAouter)

-

-

-

-6.6

dBm

2

Conditions of stressed receiver sensitivity test:

Stressed eye closure for PAM4 (SECQ)

-

-

-

3.2

dB

Damage Threshold

P_damage

5.2

-

-

dBm

Average Receive Power

-

-10.8

-

4.2

dBm

Receive power (OMAouter)

OMA

-

-

4

dBm

Receiver Reflectance

RXR

-

-

-26

dB

LOS assert

LOSA

-30

dBm

LOS de-assert

LOSD

-11

dBm

LOS hysteresis

LOSH

0.5

dB