Optoelectronics hold a range of possibilities for the hardware experimenter — indeed who among us hasn’t added LEDs aplenty to our work? What many of us may be unaware of though is that an LED is also ...

Editor’s note: This article will be in two parts. Part 1 is component-related and Part 2 is applications. Please also see Planet Analog blog “LEDs Are Photodiodes Too” as an intro to this article.

This pulse oximeter is so simple and cheap to build it’s almost criminal. The most obvious way to monitor the output of the sensor is to use an oscilloscope. The poor-man’s stand-in for that is a ...

Marktech had revealed the latest in its line of sensors which combine many LEDs of different wavelengths with a photodiode. MTMD142345PDT38 has five LEDs at 1.04, 1.2, 1.3, 1.46 and 1.55μm, plus an ...

Sometimes people forget that light-emitting diodes can also detect light quite well. They're usable in a wide range of applications as inexpensive, readily available optical detectors. Typically, an ...

Hamamatsu Photonics introduces a new Photonic Integrated Circuit (Photo IC), P13567-02CT, with applications as an optical moisture detector. This sensor integrates an InGaAs PIN photodiode and a LED ...

Thanks to their simplicity and low cost, green LED-illuminated heart beat sensors are now nearly ubiquitous, found in most consumer health products as well as many phones and wrist watches. But, for ...

WT&T Inc pleased to introduce FC/PC connectorized coaxial LED and silicon photo-detector mounted in FC-receptacle. A pair of devices can be used for analog or digital transmission (up to 50 Mb/s).

New TOPLED® D5140, SFH 2202 photodiode provides higher sensitivity and much higher linearity than standard photodiodes on the market today Wearable devices using the TOPLED® D5140, SFH 2202 will be ...

Phlux Technology has announced 1550nm avalanche photodiode with a 3.5GHz cut-off. Part of its existing Aura range, the speed increase comes from a reduced die size, down to 30µm from 80µm (1.8GHz) or ...