EDFA optical amplifier board

Erbium-doped fibre amplifiers (EDFA) are widely used in optical fibre communication systems based on DWDM dense multiplexing technology.  EDFA plays an important role in long-distance data transmission by amplifying the optical signal without converting it into an electrical signal. This ensures minimal delay and distortion, allowing optical signals to be transmitted over thousands of kilometres without the need for electronic repeaters. DWDM technology additionally allows the separation of signals into different wavebands, increasing the capacity of communication channels.

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    EDFA Optical Amplifier

    EDFA Optical Amplifier increases the power of the optical signal passing through the fibre cable without the need to convert it into an electrical signal. The amplifier module can operate at constant gain (automatic gain control AGC) and constant output power (automatic power control APC). EDFAs are integrated into DWDM dense wave division multiplexing systems to increase link capacity. The integrated Variable Optical Attenuator (VOA) can be automatically adjusted to provide smooth signal amplification.


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    Provides overall amplification of a C-band optical signal; has three main applications: power amplification (BA), linear amplification (LA), and preamplification (PA) functions


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    Covers a wide operating wavelength range of 1528~1565nm


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    Low typical noise level, which is 5 dB


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    Supports systems to acquire different cross-section radio repeater transmission


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    Excellent gain flatness of 48 DWDM wavelengths, which is <1dB


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    It can be customised, which includes support for various settings with output power of 13~24dBm; many gain characteristics of 8~35dB; power gain, linear gain and pre-gain settings


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    Transient response control: high-performance transient response control to ensure stable power and gain without affecting existing signals

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    Dual EDFA Optical Amplifier

    Dual EDFA Optical Amplifier (Dual EDFA Optical Amplifier) has two independent amplification channels to increase the bandwidth of the optical system by processing both signals in parallel. It is typically used to increase bandwidth in systems where multiple data streams need to be processed or when a redundant link is required. The EDFA optical amplifier module provides multifunctional solutions with a low noise fibre optic amplifier. The amplifier module can operate at constant gain (automatic gain control AGC) and constant output power (automatic power control APC). It is a highly integrated EDFA whose large module supports dual amplifier with two independent gain blocks.


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    Provides overall amplification of C-band optical signal; has three main applications: power amplification (BA), linear amplification (LA) and preamplification (PA) functions


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    Covers a wide operating wavelength range of 1528~1565nm


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    Low typical noise level, which is 5 dB


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    Dual amplifier contains two independent gain blocks, each of which provides optical signal amplification according to set parameters and requirements, allowing two signals to be processed simultaneously or independently of each other, increasing system flexibility and efficiency


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    Multiple operating modes: AGC adjustable Gain, APC output is adjustable, ACC voltage adjustable


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    Has an optional OSC channel for remote management that allows operators to remotely monitor and adjust amplifier operation, which is especially relevant when the unit is deployed over long distances or in hard-to-reach locations

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    Middle Stage Access EDFA Optical Amplifier

    Middle Stage Access EDFA is an optical amplifier placed in the middle of the fibre network between two nodes of a DWDM system. Its main task is to amplify the optical signal before it is transmitted over longer sections of the fibre optic link. The mid-stage access (MSA) EDFA model includes an additional mid-stage port designed to accommodate a dispersion compensation management (DCM) unit without inherent insertion loss. The design of these models mazimizes the DCM benefits to increase deployment flexibility. New placement options require fewer amplifiers in the link, and they can open the door to applications that were not possible with older technology.

    • Icon Provides total amplification of the C-band optical signal
    • Icon Offset the insertion loss introduced dy DCM
    • Icon Covers a wide operating wavelength range of 1528~1565nm
    • Icon Low typical noise level, which is 5 dB
    • Icon Additional OSC channel for remote control and MON port for online monitoring of optical power and OSNR
    • Icon Reduce the additional degradation of system OSNR
    • Icon Supports systems to acquire different cross-section radio repeater transmission
    • Icon Mid-stage access to compensate for signal loss caused by DCM or OADM, which helps to increase the signal transmission range and minimise losses in the fibre network

    Single Fiber EDFA Optical Amplifier

    Single Fiber EDFA Optical Amplifier amplifies the power of an optical signal directly within the same fibre optic line over which it is transmitted. Typically used in systems where only one fibre is available for signal transmission, the fibre infrastructure is limited and it is not possible to run additional fibres for different amplifier channels. EDFA’s single-fibre bidirectional amplifier models include red and blue ports designed for single-fibre DWDM solutions. The red op amp has blue output and input ports that are used to access the amplifier to amplify the blue optical signal. In contrast, the blue optical amplifier has a red output port and a red input port that are used to access the amplifier to amplify the red optical signal. The operating range of the blue optical amplifier is 1528nm~1543nm; that of the red amplifier is 1547nm~1561nm.

    • Icon Provides total amplification of the C-band optical signal
    • Icon Has individual adjustment and support for red and blue single fibre bidirectional EDFA
    • Icon Covers a wide operating wavelength range of 1528~1565nm
    • Icon Flexible insertion of DCMs at different distances
    • Icon Multiple operating modes, including AGC automatic gain control, adjustable APC output level and ACC voltage control
    • Icon Has additional OSC channel for remote control and MON port for online monitoring of optical power and OSNR
    • Icon Reduce the additional degradation of system OSNR
    The above-mentioned models of erbium-based DWDM.ME optical amplifiers support all conventional applications in extended optical link, among which are:
    BA
    Booster amplifier

    BA Booster, which is characterised by high input power, high gain and high output. Its application is mainly focused on the transmit end of the DWDM system to increase the optical power of the wave multiplexing system.

    LA
    Line amplifier

    LA line amplifier is characterised by low input power, low gain and high output. It is used in the middle between two network nodes of DWDM system to amplify the transmitted power.

    PA
    Preamplifier

    PA preamplifier has low input power, low output and high gain. Its main purpose is to connect to a DWDM system to amplify the received optical power and also to compensate for losses in the multiplexer adjacent to the optical receiver.

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