Key Differences Between GPON SFP Class B+ and C+

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The Key Differences Between GPON SFP Class B+ and C+ are their TX power and RX Sensitive.

Class B+ OLT transceiver: TX power 1.5~5db, RX sensitive -28db. Class B+ ONU transceiver: : TX power 0.5~5db, RX sensitive -27db.

Class C+ OLT transceiver: TX power 3~7db, RX sensitive -32db. Class C+ ONU transceiver: : TX power 0.5~5db, RX sensitive -30db.

When you configure the MA5683T, MA5680T, MA5600T, MA5608T, MA5603T… have the the confuse: what is The Key Differences Between GPON SFP Class B+ and Class C+ transceiver? Here we will solve the problem: [bodyads]

The Key Differences Between GPON SFP Class B+ and Class C+:

	B+ Module	C+ Module
Type	One-fiber bi-directional optical module, class B+	One-fiber bi-directional optical module, class C+
Operating Wavelength	Tx: 1490 nm Rx: 1310 nm	Tx: 1490 nm Rx: 1310 nm
Encapsulation Type	SFP	SFP
Port Rate	Tx: 2.49 Gbit/s Rx: 1.24 Gbit/s	Tx: 2.49 Gbit/s Rx: 1.24 Gbit/s
Minimum Output Optical Power	1.50 dBm	3.00 dBm
Maximum Output Optical Power	5.00 dBm	7.00 dBm
Maximum Receiver Sensitivity	-28.00 dBm	-32.00 dBm
Optical Connector Type	SC/PC	SC/PC
Optical Fiber Type	Single-mode	Single-mode
Reach	20.00 km	20.00 km
Overload Optical Power	-8.0 dBm	-12.0 dBm
Extinction Ratio	8.2 dB	8.2 dB

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Key Differences Between GPON SFP Class B+ and Class C+

Shahed Israr

Shahed Israr is a Network Engineer specializing in GPON, FTTH, and telecom access network technologies. With hands-on experience in Huawei OLT and ONT configuration, U2000 NMS deployment, iMaster NCE-FAN Lite management systems, firmware upgrades, and advanced network troubleshooting, he helps Internet Service Providers (ISPs) and network professionals deploy, manage, and optimize fiber optic networks efficiently. Through GPON Solution, he shares practical technical guides, real-world solutions, and professional knowledge to support engineers working in modern GPON infrastructure.

Comments

comments

8 thoughts on “Key Differences Between GPON SFP Class B+ and C+”

Is B+ SFP in gpon OLT compatible with C+ ONU? Will it register?

Shahed

December 20, 2016 at 10:44 pm

yes, it is register.
Reply

Hi,usually I was using pon sfp modules for my epon OLT,when I tried with normal 1490/1310 sfp,found it is working with onu.Any pblm if use this way ?

Can we use C+ SFP in olt compatible with B+ ONU?

Shahed

June 20, 2017 at 7:53 pm

Yes possible.
Reply

Hi, good morning

how acn i know the launched power with out use the CLI command in olt? what equipment i should use? what is the messurement in that equipment , minimun 1,5 dbs ?

thnks in advance

Shahed

November 27, 2017 at 9:24 pm

For 0/0/0 PON port:

interface gpon 0/0
display port state 0
Reply

Hi Shahed, this is only aplicable to GPON and not for GEPON really??
Thanks in advance.

Ronnyrock.