Finisar FTL4C1QL1L 40Gbps QSFP+ optical transceiver

Product Overview

Key Specifications

Key Features

1. 40Gbps High-Density Performance
   
   
   Delivers 40Gbps throughput using four parallel 10G lanes, enabling high-bandwidth connections for data center spine/leaf switches and core routers.
2. LR4 Lite & Extended Temperature Design
   
   
   Optimized for 2km SMF transmission at 1310nm, with an extended temperature range (0°C to +85°C) making it suitable for warmer data centers or outdoor telecom deployments.
3. Hot-Pluggable QSFP+ Form Factor
   
   
   Fully hot-swappable for tool-free installation and replacement, minimizing network downtime during maintenance or upgrades.
4. Digital Optical Monitoring (DOM)
   
   
   Provides real-time monitoring of optical power, temperature, voltage, and laser bias current for each channel, enabling proactive network management and troubleshooting.
5. Low Power Consumption
   
   
   Energy-efficient design supports high-density deployments in data centers, reducing cooling and operational costs.

Applications

• Data Center Interconnects (DCI): 40G links between data center buildings or campus facilities up to 2km apart, especially in high-temperature environments.
• High-Density Switch Uplinks: 40G uplinks for core and aggregation switches in enterprise and cloud data centers.
• Campus Backbone Networks: Connecting geographically dispersed campus buildings over single-mode fiber.
• Cloud Service Provider Networks: High-bandwidth 40G connections for cloud computing and storage infrastructure.

  Our Services  

• Faster delivery
• Worldwide shipping
• Alternative supply 
• Sample service 
• Test and warranty
• In-Stock（Most products）
• Quality Assured
• Customization
• Competitive Pricing
• Cost-effective equipment

For this model, we have new original, cost-effective compatible, and economical second-hand . We provide you with a variety of choices, the same quality! Each products has been strictly tested to ensure stable performance, worry-free use, and enjoy an efficient experience. Full range of options: new original quality assurance, compatible models are super value and practical, and second-hand are economical and durable. Strict quality control: each products is tested before shipment. Worry-free after-sales: warranty commitment, normal use, and quality problems can be returned or exchanged.

  About Us  

Skyward Telecom also known as Skywardtel, it was established in 2009. From the beginning to the end, we have been based on the
motto of integrity，Our mission is to help engineers and businesses overcome the challenges of acquiring high-quality, low-cost
communication products.And has provided network security and computer asset management solutions for users in more than 80
countries around the world, and has been recognized by the market.

  FAQ  

1. who are we?
We are based in Guangdong, China, start from 2009,sell to Northern Europe(10.00%),Western Europe(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%),North America(10.00%),Domestic Market(5.00%),South Asia(5.00%),Southern Europe(5.00%),Oceania(5.00%),Central America(5.00%),Africa(5.00%),Eastern Asia(5.00%),Southeast Asia(5.00%). There are total about 80-100 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
All products are sold only after passing professional technical testing;

Welcome to contact us to get super surprising price