Custom 40G QSFP+ ER4 Transceiver Module

Across a 40-kilometer passive optical network span, ordinary DFB generators suffer from severe spectral line broadening. The ER4-class transceiver utilizes internal micro-cooling circuits (TEC) to forcefully lock the operating temperature of the lasers, completely eradicating thermal drift during long-haul transmission. Simultaneously, the receiving end discards standard PIN tubes in favor of APD detectors that generate an avalanche multiplication effect, capturing the faint photons that have survived dozens of kilometers of attenuation.

Key Features:

Optical Threshold Warning: Because APD components are incredibly fragile, performing short-distance loopback testing without applying optical attenuators is strictly prohibited, as it will cause permanent hardware breakdown.

High Dynamic Range: Provides an exceptionally wide receiving power window, adapting to various complex cross-zone fiber splicing losses.

Application Scenarios:

Telecom long-haul trunk transmission crossing suburbs and downtowns; establishing unamplified high-speed data synchronization pipelines for remote disaster recovery centers.

Frequently Asked Questions

Q: Does the ER4 module require external optical amplifiers to reach 40km?
A: No. It provides a point-to-point 40km reach over standard OS2 single-mode fiber without any EDFA or external amplification.

Q: What type of receiver is used inside the ER4?
A: To achieve the 40km distance, we use an APD (Avalanche Photodiode) receiver, which has a much higher sensitivity than standard PIN receivers.

Q: Can we customize the EEPROM for Huawei or Juniper routers?
A: Yes. Tell us your exact equipment model before ordering. Our factory engineers will write the specific code for Huawei, Juniper, or any other major telecom brand to ensure it is recognized immediately.