What is photodetector pin in Optisystem?
One of the main working parts of any optical receiver is the photodetector (which converts optical power to an electric current). Either a PIN or APD (avalanche photodiode) photodetector can be used depending on the system performance objectives.
What is photodetector explain the working of a pin photodetector?
An optical detector is a device that converts light signals into electrical signals, which can then be amplified and processed. The photodetector is as essential an element of any fiber optic system as the optical fiber or the light source. Photodetectors can dictate the performance of a fiber optic communication link.
Is PIN photodiode and photodiode same?
A Photodiode is a PN junction diode that operates in reverse bias. As the name suggests, PIN photodiode is a particular type of photodiode in which an intrinsic layer is placed in between a heavily doped p-type and a heavily doped n-type layer.
What is the main advantage of PIN photodiode over PN photodiode?
The major advantage of the PIN photodiode, compared to the P-N junction, is the high response speed from the increased depletion region.
What is the role of laser and photodiode in OFC?
One of the two is the laser diode module which converts electronic signal into optical intensity signal and mainly uses a laser diode (LD) as a light source. The other is the photodiode module which converts the transmitted light signal into the electronic signal again and mainly uses a photodiode (PD).
How is PIN diode used as optical detector?
The PIN diode is used as a photo detector to convert the light into the current which takes place in the depletion layer of a photo diode, rising the depletion layer by inserting the intrinsic layer progresses the performance by increasing the volume in where light change occurs.
What are the different types of photodetectors?
Common Types of Photodetectors
- p-n Photodiodes.
- p-i-n Photodiodes.
- Avalanche Photodiodes.
- MSM Photodetectors.
What is the difference between PN and PIN photodiode?
A PN junction photodiode is made of two layers namely p-type and n-type semiconductor whereas PIN photodiode is made of three layers namely p-type, n-type and intrinsic semiconductor.
What are the major differences between PIN and avalanche photodiode?
They are high-sensitivity, high-speed semiconductor light sensors. The main advantage of the APD is that it has a greater level of sensitivity compared to PIN. The avalanche action increases the gain of the diode many times, providing much higher sensitivity. However, an APD requires a higher operating voltage.
What is Pinpin photodiode?
PIN photodiode has an intrinsic (very lightly doped) semiconductor region sandwiched between a p-doped and an n-doped region (as shown below). The PIN photodiode is reverse-biased as shown above. Since the intrinsic (i) region has no free charges, its resistance is high, so that most of the reverse-biased voltage is applied to this i region.
What is the most common semiconductor photodetector?
The most common semiconductor photodetector is the PIN photodiode as shown below. PIN photodiode has an intrinsic (very lightly doped) semiconductor region sandwiched between a p-doped and an n-doped region (as shown below).
What are photodetectors?
Photodetectors can dictate the performance of a fiber optic communication link. Semiconductor photodiodes are the most commonly used detectors in optical fiber systems since they provide good performance, being small in size, and are of low cost. Semiconductor photodiodes are made of silicon, germanium, GaAs, InGaAs, etc.
Why is the PIN photodiode reverse biased?
The PIN photodiode is reverse-biased as shown above. Since the intrinsic (i) region has no free charges, its resistance is high, so that most of the reverse-biased voltage is applied to this i region.