Fiber@Home Ltd pioneers Bangladesh’s first L-Band DWDM network deployment with Nokia

Landmark optical network expansion doubles fiber spectrum, slashes Southwest latency by up to 30%, and cuts power consumption by 35% through cutting-edge 5nm chipset technology.

The announcement came from a programme held at a city hotel today

Fiber@Home Ltd, the leading telecommunication transmission service provider in Bangladesh, today announced the successful deployment of the nation’s first L-Band Dense Wavelength Division Multiplexing (DWDM) optical transport network.

This milestone marks a transformative leap in Bangladesh’s digital infrastructure, effectively doubling optical spectrum capacity to support surging Internet traffic, 4G/5G traffic, hyper-scale cloud demands, and nationwide digital transformation.

As data traffic rapidly escalates across the country, traditional C-Band spectrum on key long-haul corridors has approached capacity limits. By integrating the L-Band optical spectrum alongside existing C-Band infrastructure, Fiber@Home creates a high-performance C+L architecture designed to meet the demands of Bangladesh's evolving digital economy.

The deployment initially strengthens high-density data routes linking the major submarine landing station, data centers, and key economic centers across the country, with ongoing expansion across metro and regional transmission rings.

Key Technical Highlights & Operational Benefits:

• Unprecedented Per-Channel Capacity (800G to 1.2 Terabits): Powered by modern coherent optical DSP technology developed by Nokia, the system supports single-channel speeds from 800 Gbps up to an incredible 1.2 Terabits per second (1.2T) per wavelength. This enables multi-terabit optical transport over existing fiber strands without requiring costly civil trenching.

• Significant Latency Reduction in the Southwest Region: Route optimizations and strategic architectural improvement lower Round Trip Delay (RTD) / latency by 20% to 30% across the Southwest region of Bangladesh, unlocking seamless real-time experiences for internet, enterprise cloud applications, financial trading, high-definition streaming, and 4G/5G backhaul.

• 35% Lower Power Consumption via 5nm Chipsets: Utilizing 5nm semiconductor technology in Nokia’s optical transponders, the network cuts per-bit power consumption by 35%, setting a new benchmark for energy efficiency in regional telecom transport.

• Lower Heat Dissipation & Green Operations: The ultra-dense, low power 5nm chipset design dramatically decreases heat output within data centers and central office locations. This lowers HVAC cooling requirements, improves equipment longevity, and directly contributes to a smaller carbon footprint.

Key Highlights at a Glance:

Bangladesh’s First L-band DWDM
Deployment Redefines National Bandwidth
Up to 1.2 Tbps per wavelength, 20–30% lower latency, and 35% greater power efficiency — delivered over existing fiber infrastructure.
C+L Band
FIRST IN BANGLADESH
1.2 Tbps
UP ​TO ​PER-CHANNEL CAPACITY
30 % ​35 %
LOWER ​LATENCY, MORE POWER EFFICIENCY
SOUTH-WEST ROUTE

Executive Statement

"As technology leaders, our responsibility is to build sustainable, resilient, and ultra-high-capacity digital infrastructure that stays ahead of Bangladesh’s rapidly accelerating data demand," said Moynul Haque Siddiqui, Chairman of Fiber@Home Ltd. "The successful deployment of Bangladesh’s first L-band DWDM network is a landmark technical achievement and a significant milestone in the evolution of the country’s digital transformation. It demonstrates our commitment to bringing next-generation optical technologies to Bangladesh and building a future-ready backbone capable of supporting the nation’s growing digital economy."

“Nokia’s next-generation optical networking technology, combining PSE-6s coherent optics with C+Lband capabilities, enables Fiber@Home Ltd to unlock additional capacity from its existing fiber infrastructure and build a scalable, resilient transport network. Together, we are expanding the usable optical spectrum through L-band and creating a future-ready foundation for Bangladesh’s growing cloud, data center and enterprise connectivity needs.”- Ming Kin Ngiam, Head of Southeast Asia of Nokia.

About Fiber@Home Ltd

Fiber@Home is a pioneer in Bangladesh's telecommunications transmission industry and a key enabler of the country's digital infrastructure. The company provides high-capacity transmission connectivity to IIGs, ISPs, telecom operators, data centers, government entities, and other critical digital ecosystems nationwide. Driven by continuous technological innovation, Fiber@Home is committed to building resilient, scalable, and future-ready network infrastructure that empowers businesses, government institutions, and communities to thrive in an increasingly connected digital economy.