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Large Active Area Photodiode

Your Professional Large Active Area Photodiode Supplier

Xiamen Bely Information Technology Co., Ltd., established in 2004, is a high-tech enterprise specializing in the research and development, production, and sales of a variety of optical active components, passive components, and networking equipment in the field of fiber optic communications.The products are widely used in: Broadcasting and television, Mobile and satellite communications, Broadband and data centers, Security monitoring, Instrumentation, Autonomous driving, Medical, other industries.

Why Choose Us

Professional Certifications
We have obtained ISO 9001 quality management system and ISO 14001 environmental management system certifications and are actively pursuing IATF 16949 International Automotive Task Force quality management system certification, laying a solid foundation for the application of LiDAR products in the automotive field.

Customized Services
We can provide customized production services for optical fiber products according to customer needs. We implement strict quality control at every stage of the manufacturing process to ensure stable and reliable product performance.

Production Equipment
We have established advanced chip packaging production lines and automatic coupling production lines. Key equipment includes: eutectic die bonding machines, fully automatic eutectic machines, parallel sealing welding machines, TO automatic sealing machines, OSA automatic transmitter coupling machines, and OSA automatic receiver coupling machines.

Professional Team
We maintain close collaborations with renowned research institutions and universities such as the Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Xiamen University, Shenzhen University, Fuzhou University, and Mingde Innovation Laboratory, bringing together a group of experts and technical personnel with long-term experience in optical device research and development.

Specification

Parameter	Symbol	Min	Type	Max	Unit	Test condition
Operating Wavelength	λ	900	-	1650	-	-
Power Rang	P	-25	-	6	DBm	No attenuation,Vr=5V
		-15	-	16	DBm	10dB attenuation,Vr=5V
		-5	-	26	DBm	20dB attenuation,Vr=5V
Responsivity	Res	0.85	0.9	-	A/W	No attenuation,Vr=5V, λ=1310nm
		0.083	0.09	-	A/W	10dB attenuation,Vr=5V, λ=1310nm
		0.008	0.009	-	A/W	20dB attenuation,Vr=5V, λ=1310nm
Capacitance	C	-	-	6	PF	φ300,Vr=5V,f=1MHz
		-	-	15	PF	φ500,Vr=5V,f=1MHz
		-	-	20	PF	φ1000,Vr=5V,f=1MHz
Dark Current	Id	-	-	1	NA	φ300,Vr=5V
		-	-	2	NA	φ500,Vr=5V
		-	-	5	NA	φ1000,Vr=5V

Advantages of Large Active Area Photodiode

Large active area photodiode is a type of semiconductor device that is used to detect light in the near-infrared range. It is made up of an InGaAs material that is capable of absorbing light in the near-infrared region.

Large active area photodiodes are commonly used in applications where detection of near-infrared light is necessary, such as in telecommunications, spectroscopy, and environmental monitoring. They are also used in medical imaging and security applications.

One of the main advantages of large active area photodiode is their high sensitivity to low levels of light. They are able to detect light in the near-infrared range with high accuracy, making them useful for a wide range of applications where traditional photodiodes would not be effective.

Large active area photodiodes also have a fast response time, allowing them to quickly detect changes in the intensity of the incoming light. This makes them useful for applications such as optical communication, where high-speed detection is necessary.

The Role Of Large Active Area Photodiode

Large active area photodiodes are semiconductor devices made from indium gallium arsenide (InGaAs), a compound that exhibits excellent sensitivity to near-infrared (NIR) light, typically in the wavelength range of 900 nm to 1700 nm. Unlike silicon photodiodes, which are limited to visible and near-visible wavelengths, large active area photodiodes excel at detecting NIR signals, making them indispensable in applications requiring high precision in this spectrum. They are constructed with a p-n junction, similar to other diodes, but tailored to respond efficiently to NIR light.

Basic Principles of Large Active Area Photodiode

Large active area photodiodes work by utilizing the photoelectric effect to generate a current when exposed to light. When photons hit the InGaAs material, they create electron-hole pairs that can move freely in the semiconductor. This movement creates a current that can be extracted from the device and used as an electrical signal.

Applications of Large Active Area Photodiode

Fiber-Optic Communications
Large active area photodiodes are the backbone of high-speed fiber-optic networks. They detect near-infrared light signals transmitted over long distances with minimal loss. Their high gain and low noise enable faster data rates, supporting the increasing demand for broadband internet and enterprise connectivity.

LIDAR for Autonomous Vehicles
LIDAR systems use large active area photodiodes to detect reflected laser pulses, creating detailed 3D maps of the environment. This application demands rapid response times and high sensitivity to ensure safety and precision.

Medical Imaging and Diagnostics
Large active area photodiodes are used in optical coherence tomography (OCT) and near-infrared spectroscopy (NIRS). These techniques require sensitive detection of weak light signals to produce high-resolution images of tissues and organs. Medical device manufacturers incorporate these photodiodes to improve image clarity and diagnostic accuracy.

Environmental Monitoring & LIDAR
Environmental agencies and research institutions utilize large active area photodiodes in LIDAR systems to monitor atmospheric gases, pollutants, and terrain. Their ability to detect faint signals over large distances makes them ideal for remote sensing applications. These devices help track climate change indicators and natural resource management efforts.

Defense and Security Systems
Large active area photodiodes are critical in night vision, missile guidance, and surveillance systems. Their high sensitivity to infrared light enables detection of stealthy objects and low-light conditions.

Lead Time

Quantity (pieces)	1 - 100	101 - 1000	＞1000
Lead time (days)	10-14	16-28	To be negotiated

Packaging and Delivery

Selling Units	Single item
Single Package Size	20X15X5 cm
Single Gross Weight	1.000 KG

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FAQ

Q: What are the advantages of a large active area?

A: The larger detection area allows higher optical coupling efficiency, easier optical alignment, and improved signal stability, especially in free-space or multimode systems.

Q: What applications commonly use large active area photodiodes?

A: They are widely used in optical power meters, spectroscopy, medical instruments, industrial sensing, and free-space optical communication.

Q: Does a larger active area affect response speed?

A: Yes, a larger active area typically increases junction capacitance, which can reduce bandwidth compared to small-area photodiodes.

As one of the most professional large active area photodiode manufacturers and suppliers in China, we're featured by quality products and good price. Please rest assured to buy customized large active area photodiode from our factory.

1000um InGaAs PD TO CAN, 300um InGaAs Photodiode, large active area photodiode

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