Electro-Optic Intensity Modulator by Beijing Rofea Optoelectronics

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The Rof-AM from Beijing Rofea Optoelectronics is a Lithium Niobate (LiNbO3) Electro-Optic Intensity Modulator that operates at a wavelength of 1060 nm. It has a bandwidth of 300 MHz and an RF half-wave voltage of 3 V. This electro-optic intensity modulator has a switch extinction ratio of 23 dB and dynamic extinction ratio of 13 dB. It has an optical insertion loss of 4 dB and optical return loss of -45 dB. This electro-optic intensity modulator has an RF input impedance of 50 Ohms & a bias input impedance of 1 MOhms.

The Rof-AM features advanced proton exchange technology and has a pulse light generator & analog transmission link. It has a PM fiber 980 nm optical fiber and supports FC/PC/APC (optical fiber) & SMA (electrical) connectors. This electro-optic intensity modulator requires a bias voltage from -20 V to 20 V and consumes an input optical power of 20 dBm & RF power of 28 dBm. It is available in a package that measures 111 mm x 12.5 mm x 9 mm and is ideal for fiber optic sensing system and pulsed light modulation system applications.

Product Specifications

Product Details

  • Part Number
  • Manufacturer
    Beijing Rofea Optoelectronics
  • Description
    1060 nm LiNbO3 Electro-Optic Intensity Modulator for Sensing Applications

Electrical Specifications

  • Electro-Optical(EO) Bandwidth
    300 MHz
  • RF Half-Wave (Vpi) Voltage
    3 to 3.5 V
  • DC Half-Wave (Vpi) Voltage
    -20 to 20 V(Bias)
  • Operating Bandwidth (-3dB)
    300 MHz
  • RF Connector(Input)
  • DC Input Impedance
    1M Ohms (Bias)
  • Electrical Return Loss
    -12 to -10 dB
  • RF Input Impedance
    50 Ohms
  • RF Input Power
    28 dBm
  • DC Extinction Ratio
    20 to 23 dB(Switch)
  • Switch extinction ratio@DC
    20 to 23 dB

Optical Specifications

  • Operating Wavelength
    980 to 1150 nm
  • Optical Input Power
    20 dBm
  • Optical Input Power
    13 mW
  • Insertion Loss
    4 to 5 dB
  • Crystal
    Lithium Niobate (LiNbO3)
  • Optical Connector
  • Optical Extinction Ratio
    12 to 13 dB(Dynamic)
  • Optical Return Loss
    -45 to -40 dB
  • Dynamic Extinction Ratio
    12 to 13 dB

Environmental Conditions

  • Relative Humidity
    5 to 90%
  • Operating Temperature
    0 to 70 Degree C
  • Storage Temperature
    -40 to 85 Degree C


  • Applications
    Fiber optic sensing system, Pulsed light modulation system

Fiber Parameters

  • Input Fiber
    PM fiber 980 nm
  • Output Fiber
    PM fiber 980 nm
  • Type (Fiber-Coupled)
    Fiber Coupled

Technical Documents

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