In today's era when the AI technology drives all the world evolutions, data traffic is growing explosively. Unprecedented challenges and demands have been posed for Data Center Interconnect (DCI). Facing with the urgent needs for high speed, large capacity and low latency, a new generation of high-performance key OTN modules solution has emerged as required and becomes the cornerstone for building the next-generation Data Center Interconnect.

High-Resolution OCM: The "OTN System Health Monitor"
The Optical Channel Monitor (OCM) is a key device for ensuring the stability of optical communication networks. The new generation of high-resolution OCM is based on coherent detection technology, with a built-in highly integrated self-developed ITLA (Integrated Tunable Laser Assembly) and ICR (Integrated Coherent Receiver), and its frequency resolution has been significantly improved.

This OCM supports the 4.8THz frequency range of the Extended C band, covering all transmission rate systems from 10Gbps to 1.6Tbps, as well as the performance monitoring of multi-rate mixed transmission systems and Extend L band is coming soon. The minimum slice step could guarantee 0.3125GHz. The dynamic range of channel power can reach -35 to 0dBm with highly power accuracy and compact dimension design. The excellent performance means that it can not only monitor in real time and precisely issues such as wavelength shift, power fluctuation and noise interference in the optical channel, but also capture signal channel modeling detailed and feature matching to provide powerful support for system intelligent management and operation & maintenance.

QSFP28 Pluggable OTDR: The "Fiber Optic Diagnosis Expert"
Optical fiber fault location and maintenance are difficult located in the operation and maintenance of optical interconnection in data centers. Accelink Technologies has launched a fully functional OTDR with a pluggable QSFP package supported plug-and-play. Within limited compact dimension package, it also can support fast scan, output standard SOR files and has high dynamic range maximum to 33~35dB. That means the capability of monitored optical fiber span reaching up to 160 kilometers.

Twin 2×32 WSS: The "Spectrum Resources Intelligent Scheduler" .
Considering the requirements of multi-rate coexistence, mixed transmission and re-configurable for future speed improvement, high-dimensional flex grid WSS products has become increasingly prominent. After Twin2x20 WSS launched in 2024, Accelink has launched the Twin 2×32 WSS product based on its own LCOS technology, providing excellent solutions for the optimization and upgrading of DCI OTN system.

Function Port Expansion: The basic configuration comes with 2×32 ports, which can be upgraded to 2×33/34 ports. It supports the ASE filling light loading ports required by the new-generation C+L optical transmission system for the coherent SRS effect. Meanwhile, it also supports the OXC system to add Loopback ports in this direction.
C6T Working Band: It is compatible with the application of the Extended C band and expands the spectral width by 25% on this basis. The C6T+L6T version will be coming soon. It provides a highly cost-effective solution for the CDC-F ROADM system in OTN or DCI for mesh network building.
Flex Grid: It supports a granularity of 6.25GHz and flexible configuration of channel bandwidth ranging from 37.5GHz to 400GHz. It can dynamically adapt to the requirements of different modulation formats such as 400G, 800G and 1.6T, and easily handle the differentiated scenarios of Data Center Interconnect (DCI) interconnection.

Multi-channel SGA products: "Intelligent Controller" for optical fiber routings

In the data center interconnect networks with complex multi-link networking, the flexible scheduling of optical fiber links and stable capability of link amplify are becoming more important in DCI system. The multi-channel SGA series of products launched by Accelink Technologies are specially designed for optical fiber links that are efficient, flexible, safe and reliable.

The SGA supports expansion on demand, can be rapidly deployed without the need for prior planning of optical fiber links, and meet the multi-scenarios of the transmission performance of links throughout their entire life cycle. The product has the following advantages:
1) High-bandwidth Applications: Compatible with the C-band and L-band, with low overall power consumption.
2)High Deployment Flexibility: The gain range can be as high as 30 dB, and the optical fiber links have strong adaptability.
3)Excellent Optical Performance: It has excellent gain fluctuation and dynamic performance, with the transient being ≤1.5 dB and the gain locking time being ≤1ms, demonstrating remarkable L0 optical layer performance.
4)High Scalability and Adaptability: It supports multi-channel expansion and enables flexible network and service planning.
5)Efficient Operation and Maintenance: The product is with unified types, and standardized management interfaces.

ECOC (European Conference on Optical Communication) 2025 will be held at the Bella Center in Copenhagen, Denmark from September 29th to October 1st, 2025. We sincerely invite all colleagues in the industry to visit the Booth C2124 at ECOC 2025 to gain an in-depth understanding of these innovative products and technologies and jointly discuss the development direction of future data center interconnects.