Optical Transponder

DQT 100

DQT-100 Optical Transponder

Product Overview

The DQT100 is part of XKL’s DarkStar DWDM Transponder family of products and is based on XKL’s DarkStar architecture, the foundation for addressing today’s IT challenges and scalable growth.

The DQT100 comes with either one or two 100G DWDM channels. The 100G data channel can use either tunable 100Gbps coherent CFP transceivers or non-DWDM short-reach CFP transceivers. These systems enable customers to soft-configure the aggregation of 10G Ethernet services.

The DQT100 utilizes the DarkStar DMD Mux/Demux in order to aggregate up to 96 wave lengths on a single fiber pair. Alternatively, the DQT100 can provide alien wave injection into an existing customer network. The DQT100 systems are fully tunable and allow for a customer to grow their network to 9.6 terabits of line-side bandwidth. The DQT100 solution includes a powerful aggregation scheme based on statistical multiplexing.

This approach to data aggregation optimizes channel utilization, provides bandwidth shaping controls, and gives the customer complete control over their data transport. Under the instantaneous demands of real-world internet traffic, statistical multiplexing leverages the statistics of real-time demand, allowing many more users to transmit their data packets over a shared channel than would normally be the case if a static aggregation approach, such as time-division multiplexing, were employed.

As a result, statistical multiplexing can help lower the cost of building and maintaining an optical network. DQT100 systems install in under an hour and are available in 1 rack unit (1U) or 2 rack unit (2U) configurations. A typical DQT100 (i.e.,1 port) uses 164 watts of power. Network administrators can deploy and commission these systems in a fraction of the time it takes to deploy traditional optical transport equipment. Setting up the management network, as well as configuring services, are done in minutes. All the complexities of building an optical network are handled by the DQT100 system, leaving network administrators with confidence in their deployments.


  • Zero cost software updates.
  • No licensing fees.
  • Simplicity, reliability, durability.
  • Highly scalable solutions.

    Technical Features

    Integrated System Architecture:

    • DWDM Solution.
    • Tunable system (based on ITU grid).
    • Statistical multiplexing.
    • Dynamic bandwidth allocation.
    • Soft-configured weighted round-robin priority scheduler.
    • Alien wavelength support.
    • Media converter.

    System Level Features:

    • Hot-swap components:
    • 1+1 redundant power supplies, supports AC and DC.
    • Redundant fans.
    • Laser transceivers: QSFP+, Optical Service Channel (OSC).
    • Field-replaceable dual flash storage modules; one is write-protected.
    • Hitless software upgrades—no customer data loss.
    • System-wide watchdog timer to ensure software response.

    Client Services:

    • 3 or 6 (QSFP+) ports: Up to 240Gbps client-side services.

    Line Side:

    • 1 or 2 (CFP) channels: 100Gbps or 200Gbps line-side bandwidth.


    • Growth up to 48 or 96 channels (on the same fiber pair) with the addition of an XKL DMD-A or DMD-P.

    Field Replaceable Units:

    • Field-replaceable dual flash storage modules; one is write-protected.
    • Hot-swap laser transceivers: QSFP+, Optical Service Channel (OSC).
    • Hot-swap power supplies (1+1 Redundant).
    • Hot-swap fan units.

    Supported Topologies:

    • Point-to-Point
    • Ring
    • Linear
    • Mesh
    • Protected (using DMD-A)

    Lean On Us

    Contact us today for a free consultation with top level engineers who will architect a solution before you buy.

    Customers Rave

    “I have lots of problems to solve, but the XKL equipment isn’t one of them.”

    JPIX, VP of Operations

    “Trouble tickets went down 60% after the XKL equipment was installed.”

    Smithsonian, IT Director

    “The XKL systems have been rock solid and low touch since instillation.”

     Tenent, Network Engineer

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