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  • Dual-Output Y-Branch Balanced Bridge Modulator (YBBM)

    • Dual-Output Y-Branch Balanced Bridge Modulator (YBBM)     


    The LP-CATV-15-10-0-A is a high-performance Y-Branch Balanced Bridge Modulator (YBBM) specifically designed for 1550nm CATV transmission systems and advanced optical sensing. By integrating a traveling-wave phase modulator into a Mach-Zehnder interferometric structure, it provides superior linearity and stability for analog signal modulation.

    Key Architecture The device features a unique dual-output configuration, utilizing a balanced bridge design to provide complementary optical signals. This architecture is critical for reducing common-mode noise and enhancing the dynamic range in high-fidelity fiber optic links.



    Product model


    Name Model Price
    Dual-Output Y-Branch Balanced Bridge Modulator   [PDF]  [RFQ]

    LP-CATV-15-10-0-A     		[Please inquire]
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    Parameter


    Features

    ● Operating Wavelength: 1550nm band

    ● Operating Bandwidth: 40MHz to 860MHz with flat response

    ● Integrated Traveling-Wave Phase Modulator

    ● RF Input Power (Phase Modulator): Up to +30dBm

    ● Output Configuration: Balanced-bridge interferometric complementary dual outputs

    ● Low Drive Voltage: Low Vpi RF drive voltage

    ● Low Insertion Loss (IL)

    ● High Long-Term Stability and Reliability

    ● Low Bias Drift

    Specifications

    1. General Specifications

    Parameter

    Symbol

    Unit

    Range

    Typical Value

    Crystal Material

    -

    -

    -

    Lithium Niobate (LiNbO3)

    Crystal Orientation

    -

    -

    -

    X-cut, Y-propagation


    2. Optical Performance

    Parameter

    Symbol

    Unit

    Range

    Typical Value

    Operating Wavelength


    nm

    Typ

    1550±10

    Insertion Loss

    IL

    dB

    Typ

    4.5

    Output IL Balance

    ΔD

    dB

    Typ

    1.0

    Extinction Ratio

    R

    dB

    Typ

    20

    Optical Return Loss

    RL

    dB

    Min

    -45

    Max Input Optical Power

    Pmax

    mW

    Max

    100


    3. Electrical Performance

    Parameter

    Symbol

    Unit

    Range

    Typical Value

    DC Half-wave Voltage

    Vπ(Phase)

    V

    Max

    8.5

    Operating Bandwidth

    BW (Phase)

    GHz

    Typ

    2.5

    Electrical Return Loss

    S11 (Phase)

    dB

    Max

    -8.5

    Input Impedance

    R (Phase)

    Ohm

    Typ

    50

    RF Power

    Pmax (Phase)

    dBm

    Typ

    30


    4. Intensity Modulator - RF Port

    Parameter

    Symbol

    Unit

    Range

    Typical Value

    Half-wave Voltage @100MHz

    Vπ(RF)

    V

    Max

    6.0

    Operating Bandwidth

    S21

    MHz

    Typ

    40 ~ 860

    Amplitude Flatness

    -

    dB

    Typ

    ±0.5

    Phase Flatness

    -

    °

    Typ

    ±5

    Electrical Return Loss

    S11(RF)

    dB

    Max

    -18

    Optical Output Phase Diff.

    -

    °

    Typ

    0.26

    DC Voltage

    Vmax (RF)

    V

    Typ

    0

    RF Power

    Pmax (RF)

    dBm

    Typ

    24


    5. Intensity Modulator - Bias Port

    Parameter

    Symbol

    Unit

    Range

    Typical Value

    Half-wave Voltage Vπ, DC

    Vπ (Bias)

    V

    Typ

    5.0

    Electrode Resistance

    R (Bias)

    Ohm

    Typ

    10k

    π/2Bias Voltage @1550nm

    -

    V

    Typ

    ±3V

    DC Voltage Limit

    Vmax (DC)

    V

    Max

    ±15V


    6. Mechanical & Environmental

    Parameter

    Symbol

    Unit

    Range

    Typical Value

    Package Type

    -

    -

    -

    -

    Mechanical Dimensions

    -

    mm

    Typ

    119.4 X 22.9X9.4

    Input Fiber

    -

    -

    -

    Corning PM Fiber

    Output Fiber

    -

    -

    -

    Corning SM Fiber

    Fiber Length

    L

    cm

    Typ

    80

    Operating Temperature

    Tw

    °C

    -

    -5 ~ 70

    Storage Temperature

    Ts

    °C

    -

    -40 ~ 80

    Application

    ● CATV Optical Transmitters: External modulators for 1550nm CATV systems

    ● Fiber Optic Sensing

    ● Optical Fiber Measurement Equipment



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