Pin Diode Characteristics Experiment


  • Precise Optical Alignment: The optical alignment of the components is attained by optical bench, the setting up time is faster and experimentation is easy.
  • Fine and Easy Light Intensity Adjustment: Light intensity adjustment is done via use of two polarizers. This helps in easier and fine light intensity adjustments.
  • Simple and Easy Connections: The color-coded terminals on the various components aids in the ease of connections thus reducing the setup time.


  • OB2 Optical Bench Set 0.4m 1
  • HA001 Light Source Holder 1
  • HA004 Polarizer Holder 1
  • HA006 Analyzer Holder 1
  • HA021 Photodiode Module Holder 1
  • PH64505 Multimeter 1
  • PH61022D/2 Power Supply for Light Source 2
SKU: PIN1-C Category:



  • To study the response of PIN diode, in the following conditions:
  • Photo current (Iph) vs Applied voltage at constant irradiance (Φ) under Reverse biased condition of the PIN diode.
  • Current (I) vs Voltage (V) under forward bias condition of the PIN diode.


The PN-Junction diodes, though are versatile, have a few limitations regarding the amount of current they could handle before breakdown and also have low switching frequency, low power handling capacity and low quantum efficiency. To overcome all these issues PIN diode was designed. PIN diodes are also extensively used a photo diode in PIN photo diode configuration and are very important in optical fiber communication.