Question 1

What are the core optical specifications, optical power budget, and electrical power metrics of the Huawei GPON OLT Class C+ module (HW-OPT-GPON-OLT-C-PL)?

Accepted Answer

Compliant with ITU-T G.984.2 Class C+ standards, the Huawei HW-OPT-GPON-OLT-C-PL is an SFP BiDi transceiver equipped with an SC/UPC optical interface. It integrates a 1490nm continuous-mode DFB transmitter delivering an optical launch power of +3.0 to +7.0 dBm, paired with a 1310nm burst-mode APD-TIA receiver boasting a sensitivity of < -30.0 dBm (BER @ 1x10^-10) and an overload threshold > -12.0 dBm. This delivers a robust minimum 32 dB optical link budget, supporting standard 20km reaches at 1:64 or 1:128 optical splitting ratios. Operating on a 3.3V DC power rail with a current draw under 400mA, power consumption is constrained to under 1.5W. It features SFF-8472 compliant Digital Diagnostic Monitoring (DDM/DOM), reporting real-time metrics including optical Tx/Rx power, laser bias current, internal supply voltage, and operating temperature.

Question 2

Which Huawei OLT chassis and service boards support HW-OPT-GPON-OLT-C-PL, and can it coexist with legacy Class B+ modules in mixed deployment?

Accepted Answer

HW-OPT-GPON-OLT-C-PL is natively compatible with Huawei SmartAX MA5600T platforms (MA5680T, MA5683T, MA5608T) and next-generation SmartAX MA5800 series (MA5800-X2/X7/X15/X17, EA5800). It operates reliably across standard GPON line cards, including GPBD (8-port), GPFD (16-port), GPHF, GPUF, and Combo PON cards (such as CGHF and CGID in GPON operational mode). Because optical transceivers operate independently at the physical layer, Class C+ transceivers can be mixed with Class B+ optics within the same line card. The OLT manages ranging, Dynamic Bandwidth Allocation (DBA), and link budgets per-port independently, allowing operators to execute targeted ODN link upgrades on loss-heavy or high-split branches without requiring wholesale module replacement.

Question 3

What environmental tolerance, thermal management, and circuit protection mechanisms are engineered into the Huawei Class C+ OLT transceiver?

Accepted Answer

The HW-OPT-GPON-OLT-C-PL features an all-metal zinc alloy shielded enclosure optimized for passive thermal dissipation and EMI suppression within high-density 16-port OLT cards. It operates across a commercial case temperature range of 0°C to +70°C (with extended storage limits from -40°C to +85°C) and handles non-condensing relative humidity from 5% to 95%. The electrical interface integrates robust TVS diode arrays offering ESD resilience compliant with IEC 61000-4-2 (6kV contact, 8kV air discharge). The optical engine complies with FDA 21 CFR 1040.10 and IEC 60825-1 Class 1 eye-safety regulations. Rated for an MTBF exceeding 1,000,000 hours, it ensures long-term operational integrity in demanding outdoor telecommunication cabinets and central office environments.

Key specifications	Value
Physical Form Factor	SFP (Class C+)
Data Rate	Downstream 2.488Gbps / upstream 1.244Gbps
Central Wavelength	Tx 1490nm / Rx 1310nm
Maximum Distance	20 (supports 1:64 / 1:128 split ratios) km
Fiber Type	Single-mode single-fiber (BiDi)
Optical Connector	SC/UPC
Typical Power Consumption	< 1.5 W
Operating Temperature	0°C ~ +70°C
Transmitter Power	+3.0 ~ +7.0 dBm
Receiver Sensitivity	< -30.0 dBm

Huawei GPON OLT Class C+ Standard BiDi Optical Transceiver Module (SC/UPC)

What this product is

What this product is

What problem it solves

Who and where it is for

Core advantages

Technical specifications

Applications

Residential FTTH broadband distribution

Passive Optical LAN (POL) enterprise networks

Broadband access municipal upgrades

Frequently asked questions

Continue exploring

Huawei 1.25G eSFP 1310nm 10km Enhanced Single-Mode Gigabit Optical Transceiver

Huawei 100G CFP2 1310nm 10km Single-Mode Optical Transceiver Module

Huawei 100G QSFP28 1310nm 10km Single-Mode Optical Transceiver Module (4x25G LR4 Duplex LC)

Huawei 100G QSFP28 850nm 100m Multi-Mode Optical Transceiver Module (SR4 MPO)