InGaAs Photodiodes

We are specialists in InGaAs photodiodes for a wide variety of configurations and uses, we pride ourselves in our excellent customer service and technical capabilities - responsive, inventive, flexible. Call us today to talk to a live person at (805)-582-0155 or send us an email @

High Speed

High speed InGaAs photodiodes for high speed analog and digital communication systems, LANs, FDDI, instrumentation and sensing applications. All the devices are fabrica​ted with planar-passivated technology; photosensitive surfaces are broadband AR-coated. 

Large Area

Large Area InGaAs photodiodes for instrumentation and sensing applications. Responsivity in the wavelength regions 800 nm to 1700 nm is excellent. All of the devices are fabricated with planar-passivated technology; photosensitive surfaces are broadband AR-coated. 


Optical Receivers, Converters, and Arrays. We have the engineering expertise and resources to solve a variety of application problems.  Whether your requirements are for off-the-shelf detectors, specially-configured packages, or custom-designed chips, we stand prepared to support your photodiode needs.

About Us

Fermionics Opto-Technology is an independent manufacturer of InGaAs photodiodes for optical communication, test instrumentation, sensing, and medical equipment applications. At Fermionics, we are dedicated to serving the needs of our diverse customer base by focusing on quality, timely delivery, and customer design requirements. The company was founded and incorporated in the State of California in 1991.

Contact Information

Sales Engineer: Jesus Cortez


ph: +1 (805) 582-0155

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