What Is PIN photodiode and avalanche photodiode?
PIN photodiode is a kind of photo detector, it can convert optical signals into electrical signals. The PIN photo diode operates with an applied reverse bias voltage and when the reverse bias is applied, the space charge region must cover the intrinsic region completely.
What is the difference between a regular photodiode and a PIN photodiode?
PIN photodiodes are mostly used in high-speed applications. In a normal p-n junction diode, voltage is used as the energy source to generate electric current whereas in photodiodes, both voltage and light are used as energy source to generate electric current.
What is the structure of PIN photodiode?
PN & PIN photodiode structures As the intrinsic area is included in the active junction for light collection, there is a much larger area for light collection, making the PIN photodiode more effective. In the photodiode fabrication process a thick intrinsic layer is inserted between the P type and N type layers.
What is the difference between PIN diode and PN junction diode?
Pin diode is a type of diode that has p-type and n-type semiconductor material sandwiching an intrinsic layer. This is the structural difference between a normal PN junction diode and a PIN junction diode.
Is avalanche diode and avalanche photodiode same?
The main difference of the avalanche photodiode to other forms of photodiode is that it operates under a high reverse bias condition. The avalanche action enables the gain of the diode to be increased many times, providing a very much greater level of sensitivity.
What is the difference between the two types of photodiodes?
PIN photodiode: These days PIN photodiode finds wide applications. It collects the light photons more efficiently than PN photodiode. This photodiode provides a large area for the collection and conversion of the light photons. Avalanche photodiode: Avalanche process is used for providing extra performances.
Why PIN photodiode is preferable instead of 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 PIN diode explain structure and working of PIN diode?
A PIN diode operates under what is known as high-level injection. In other words, the intrinsic “i” region is flooded with charge carriers from the “p” and “n” regions. Its function can be likened to filling up a water bucket with a hole on the side. Once the water reaches the hole’s level it will begin to pour out.
What has more sophisticated structure than PIN photodiode?
1. ___________ has more sophisticated structure than p-i-n photodiode. Explanation: Avalanche photodiode is second major type of detector in optical communications. This diode is more sophisticated so as to create a much higher electric field region.
How does PIN diode differ from avalanche diode?
Avalanche photodiodes (APDs) are widely used in laser-based fiber optic systems to convert optical data into electrical form. 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.
What is the use of avalanche diode?
An avalanche diode is a one kind of semiconductor device specially designed to work in the reverse breakdown region. These diodes are used as relief valves which are used for controlling the system’s pressure to guard electrical systems from surplus voltages. The symbol of this diode is same to as Zener diode.
What are the advantages of avalanche photodiode?
Advantages of avalanche photodiode : Includes a greater level of sensitivity. High performance. Fast response time.
How is an avalanche diode similar to a PIN photodiode?
Avalanche photo diode is a kind of photo detector which can convert signals into electrical signals pioneering research work in the development of avalanche diode was done mainly in 1960’s. Avalanche photodiode structural configuration is very similar to the PIN photodiode. A PIN photodiode consists of three regions-.
What makes an APD different from a PIN diode?
In addition, the term avalanche refers to the output being non linear; as a result, APDs also produce a higher level of noise than a PIN diode. Also APDs, unlike PIN devices, need a high reverse bias condition to work.
When was the development of the avalanche diode?
Avalanche photo diode is a kind of photo detector which can convert signals into electrical signals pioneering research work in the development of avalanche diode was done mainly in 1960’s.
Where did the name avalanche photodiode come from?
Avalanche photodiodes or APDs are highly sensitive semiconductor devices that transform optical signals into electrical signals. These are operated under high reverse bias. The term ‘avalanche’ comes from the avalanche breakdown phenomenon. The symbol of avalanche photodiode is the same as that of Zener diode.