100G BIDI 80km ZR4 Optical Transceiver: The Revolutionary Solution for Long-Distance Transmission

Ⅰ.Market Overview: Rising Demand and Maturing Technology Drive Adoption

Currently, ETU-Link Technology Co., Ltd. has launched a 100G BIDI 80km ZR4 products have been delivered in batches to customers in multiple fields around the world, supporting a speed of 103.125Gbps and a transmission distance of up to 80km. They also adopt KR4-FEC forward error correction technology to improve signal stability, making them the mainstream choice for long-distance transmission scenarios.

Ⅱ.Trend Development: High Speed, Low Power Consumption, and Integration Lead the Future

1.Speed Upgrade: With the explosive growth in demand for AI computing power, data centers are continuously increasing their bandwidth requirements.

2.Low Power Consumption Design: Optimized circuit design reduces module power consumption by more than 30% compared to traditional solutions, meeting the green energy-saving requirements of data centers.

3.Intelligent Management: It integrates DDM (Digital Diagnostic Monitoring) function, and monitors parameters such as optical power, temperature and voltage in real time through I2C interface to achieve preventive maintenance and improve operation and maintenance efficiency.

4.Standardization and Compatibility: Strictly adheres to the QSFP28 MSA packaging standard, is compatible with mainstream brand equipment, supports hot-swapping, plug and play, and reduces networking costs.

Ⅲ.Application Areas: Meeting Long-Distance Transmission Needs Across All Scenarios

1.Data Center Interconnect (DCI): Big data interaction between data centers across campuses and cities, with an 80km transmission distance supporting the efficient operation of cloud computing, disaster recovery, and other services.

2.Telecommunications Backbone Network: used for 4G/5G base station backhaul, metropolitan area network aggregation layer and long-distance backbone network links to meet the requirements of low latency and high bandwidth.

3.Enterprise Private Network Upgrade: Large enterprises and campus networks can upgrade to 100G bandwidth through single-fiber bidirectional technology without replacing existing fiber optic cabling, saving on transformation costs.

4.Industry-Specific Networks: Fiber optic sensing and monitoring systems in fields such as power, transportation, and energy, utilizing long-distance transmission characteristics to achieve remote data acquisition and real-time control.

Ⅳ.Technical Challenges: Overcoming Long-Distance Transmission Bottlenecks

1.Signal Attenuation and Compensation:

①Challenge: Over a transmission distance of 80km, the optical signal attenuates due to fiber loss and dispersion, requiring amplification via SOA (Semiconductor Optical Amplifier).

②Solution: Use a high-power EML laser (such as LAN WDM band) in conjunction with an SOA receiver to improve signal strength; optimize wavelength allocation (1273-1309nm) to reduce dispersion effects.

2.Anti-Interference Capability :

①Challenge: Long-distance transmission is susceptible to electromagnetic interference and noise, leading to an increased bit error rate.

②Solution: Integrate the KR4-FEC forward error correction algorithm, with an error correction capability on the order of 10^-12; adopt an SOA+PIN receiver to improve sensitivity and adapt to low optical power scenarios.

3.Compatibility and Standardization :

①Challenge: Differences in interface protocols and wavelength allocation among different manufacturers' equipment affect interoperability.

②Solution: Strictly adhere to international standards such as IEEE 802.3bm and QSFP28 MSA, and pass interoperability tests by mainstream equipment manufacturers to ensure cross-platform compatibility.

4.Cost Control:

①Challenges: The high cost of core components such as high-speed optical chips and SOA amplifiers restricts large-scale deployment.