What is Optical Stressed Receiver Sensivity
This page describes Stressed Receiver Sensivity definition used in optical domain. It also mentions optical Stressed Receiver Sensivity formula or equation.
• It is defined as minimum optical average power required as input to achieve given BER.
• It is very useful parameter in optical power budget calculations.
• It depends on various impairments such as ISI, jitter, rise time, fall time, RIN (Transmitter relative intensity noise) etc.
The figure-1 depicts typical model of an optical receiver. As shown it consists of photo-diode, transimpedance amplifier (TIA), limiting amplifier (LA), clock-data recovery module (CDR) etc.
Stressed Receiver Sensivity Formula or Equation
Following is the formula or equation of optical Stressed Receiver Sensivity.
➤OMA refers to Optical Modulation Amplitude. It is ratio of peak-to-peak current at the TIA input and photo detector responsivity (ρ) in A/W. It can be expressed as follows.
➤ OMA = IP-P/ρ (µW)
➤re is extinction ratio of the received optical signal.
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