SOURCEFORGE » RALF » 2015 Evaluation and test of an optical / L-band tranceiver

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h1. 2.3 Main Parameters 

This part lists the main specifications and highlights the main parameters to compare an optical link with a coaxial cable

h2. 2.3.1 Optical link

The optical link consists of :

* Optical transmitter OTX1910 : it modulates the intensity of the optical 1320 nm wavelength with the RF input signal ;

* Monomode fiber 9/125 OS2 (to avoid dispersion effect) to optical signal on a distance up to 10 kilometers ;

* Optical Receiver ORX1900 : it detects optical wavelength intensity modulation and outputs the RF modulating signal.

*Optical transmitter OTX1910*

|_. Optical transmitter OTX1910	|_. min	|_. typ	|_. max	|_. Unit |_. comments |

|Supply |=. 9 |=. 12 |=. 14 |=. V |=.  |

|Current consumption |=. - |=. - |=. 450 |=. mA |=.  |

|RF Input Connector |\3=. 75 Ohm F-type |=.  |=.  |

|RF Return Loss |=. 14 |=. - |=. - |=. dB |=. |

|RF Maximum Input Level |=. - |=. - |=. 15 |=. dBm |=.  |

|RF Input Dynamic Range |=. -65 |=. - |=. -10 |=. dBm |=.  |

|RF Input Frequency |=. 700 |=. - |=. 2300 |=. MHz |=.  |

|Optical Connecctor |\3=. LC/PC single mode |=.  |=.  |

|Optical signal wavelength |=. - |=. 1310 |=. - |=. nm |=.  |

|Optical power level |=. - |=. 1 |=. - |=. dBm |=.  |

*Fiber Monomode 9/125 OS2 (G.652.D ITU-T compliant), low dispersion at 1320 nm*

|_. Fiber Optic |_. min	|_. typ	|_. max	|_. Unit |_. comments |

| Optical Loss  |=. - |=. 0.3 |=. - |=. dB/km |=. 1320 nm |

*Optical receiver  ORX1900*

|_. Optical receiver  ORX1900 |_. min	|_. typ	|_. max	|_. Unit |_. comments |

|Supply |=. 9 |=. 12 |=. 14 |=. V |=.  |

|Current consumption |=. - |=. 240 |=. - |=. mA |=. |

|Optical Input Connector |\3=. LC/PC single mode |=.  |=.  |

|Optical input  signal wavelength range |=. 1270 |=. 1310 |=. 1610 |=. nm |=.  |

|Optical input signal level range |=. -6 |=. - |=. 4 |=. dBm |=.  |

|RF Output  Connector |\3=. 75 Ohm F-type |=.  |=.  |

|RF Input Frequency |=. 700 |=. - |=. 2300 |=. MHz |=.  |

*Optical link with fiber length of 1 m*

|_. Optical link with fiber length of 1 m |_. min	|_. typ	|_. max	|_. Unit |_. comments |

|Noise Figure |=. - |=. - |=. 31 |=. dB |=.  |

|Carrier to Noise Ratio |=. 55 |=. - |=. - |=. dB |=. Pin=-13 dBm, Fiber=1 m |

|SFDR |=. 102 |=. - |=. - |=. dB/Hz2/3 |=. Pin=-13 dBm, IM3=50 dBc|

|IIP3 |=. 12 | - |=. - |=. dBm |=. Pin=-13 dBm, IM3=50 dBc|

h2. 2.3.2 Coaxial cable