Photodiode
convert's light into current.
See Also: Diode, Laser Diode, Zener Diode, Diode Test, Photodiode Arrays
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Photodiodes
Avalanche
Similar to photomultipliers, avalanche photodiodes are used to detect extremely weak light intensities. Si APDs are used in the wavelength range from 250 to 1100 nm, and InGaAs is used as semiconductor material in APDs for the wavelength range from 1100 to 1700 nm.
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Low Input Bias Current Amplifiers (<100 pA)
Low input bias current op amps are required whenever the difference of currents or voltage is small and needs to be measured accurately. These op amps are used so that the signal is not loaded down by the input of the op amps. Low input bias current op amps are critical for interfacing sensors in applications from photodiodes, pH meters, or other electrometer related functions to downstream electronics. Analog Devices has many precision op amps that fit the definition and range of these applications.
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Spectral Response (Spectral Sensitivity) Measurement
It is used to measure the spectral response (spectral sensitivity) of photoelectric conversion devices (photodetectors / sensors) such as silicon photodiodes and CCD · CMOS image sensors . Measurement in the broadband wavelength region can be performed with low stray light.
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Adjustable Range Reflective Photoelectric Sensor
EQ-30
Panasonic Industrial Devices Sales Company of America
The compact EQ-30 Adjustable Range Reflective Photoelectric Sensor is only 68 x 20 x 40mm but delivers amazing performance. Normal Reflective Type Sensors operate by sensing the variation in the amount of incident beam. However, the Adjustable Range Reflective Sensing Type Sensors, incorporate a 2-segment photodiode to sense variation in the incident beam angle. Thus, the output is activated according to the distance of the object from the Sensor. This system helps the EQ-30 Series to be unaffected by object color or a background, enabling stable sensing. The robust housing offers IP67 protection allowing the EQ-30 Sensor to be used in the most demanding industrial environments.
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Sensing System
FBG
A cost-effective FBG (Fiber Bragg Grating) interrogation system that includes a tunable laser diode, 6 photodiodes, and several fiber-optic couplers has been developed with very simple coniguration. Especially, it is not necessary to compensate the accurate wavelength because the wavelength sweeping is precisely performed in terms of the response time of which external cavity material is 5 msec. Moreover, time-varying temperature trends as well as spectra of FBGs can be observed through the front display.
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High-resolution, SWIR megapixel camera
Wildcat+ 1280 Series
The Wildcat+ 1280 series is based upon a state-of-the-art InGaAs photodiode array with 1280×1024 pixels and 5 μm pixel pitch. The camera offers superior, high-resolution SWIR imaging capabilities, comes in a versatile and industry-proven Wildcat camera package (GenICam compliant) and offers advanced on-board image processing.The Wildcat+ 1280 camera outputs full frame images at 120 Hz via either a CameraLink or USB3 Vision interface.The Wildcat+ 1280 is suitable for semiconductor inspection, display inspection (mobile phone and TV), microscopy and laser beam analysis.Benefits & Features• Compact and industry-proven camera design• High-resolution SWIR imaging• Advanced on-board image processing performance• GenlCam compliant• Flexible optical mount and lens options
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X-Ray And Gamma Detector Systems
The XR-100CR is a new high performance x-ray detector, preamplifier, and cooler system using a thermoelectrically cooled Si-PIN photodiode as an xray detector. Also mounted on the 2-stage cooler are the input FET and a novel feedback circuit. These components are kept at approximately -55 °C, and are monitored by an internal temperature sensor. The hermetic TO-8 package of the detector has a light tight, vacuum tight thin Beryllium window to enable soft xray detection. The XR-100T-CdTe represents a breakthrough in xray detector technology by providing “off-the-shelf” performance previously available only from expensive cryogenically cooled systems. The XR-100-CdTe is also suited for measuring gamma rays.
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Silicon Pyranometer
LPSILICON-PYRA04
Pyranometer with silicon photodiode for measuring the GLOBAL SOLAR IRRADIANCE, diffuser for cosine correction. Spectral range 400…1100 nm.
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Photodetectors
Detection of weak light pulses on the few-photon level is crucial for many applications. The Menlo Systems' detector portfolio includes PIN photodiodes with low noise RF amplifiers, ultrafast avalanche photodetectors with integrated high voltage supplies, and detectors based on homo- and heterodyne detection.
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Photodiode Energy Sensors
Our photodiode laser energy sensors are able to measure low energy pulses down to 10 pJ at frequencies up to 20 kHz. Silicon photodiodes for the UV and visible spectrum and Germanium photodiodes for infrared.
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Light Analysis
Welcome to Thorlabs; below you will find links to detectors and instrumentation that measure the various properties of light, a subset of our entire line of photonics products. Thorlabs offers an extensive selection of instruments that measure the properties of light. Our versatile power and energy meters can be used with over 25 different sensors in order to make NIST-traceable power and energy measurements. If the convenience of a meter is not desired, our selection of detectors includes basic photodiodes (uncalibrated and calibrated), photodetectors (biased, amplified, and avalanche), CCD and CMOS arrays, position detectors, integrating spheres, and photomultiplier tubes. The Beam Characterization category contains beam profilers (camera and scanning slit), a wavefront sensor, spectrometers, and interferometers, while the Polarimetery link leads to a selection of instruments used to measure and control the polarization of light.
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FTTx Amplifiers
Macom Technology Solutions Holdings Inc.
MACOM’s FTTx amplifiers are designed for PON, RFoG and SFU receiver equipment and are offered in small, plastic QFN packages with integrated amplifier and attenuator functions. All parts cover the full 45 to 1000MHz / 1200MHz CATV band. 5v and 12v solutions are offered with power consumption of ≤ 1.5Watts. MACOM’s FTTx amplifiers are characterized with industry standard photodiodes, covering optical input ranges from -12 to +3dBm and each sample EVK comes complete with a photodiode and APC connector.
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PIN-TIA
The fiber-optic coaxial PIN-TIA receiver module is designed for SONET/SDH fiber-optical communicationnetworks, using reliable InGaAs PIN photodiode (PD) highly integrated with low noise transimpedence amplifier(TIA) to convert a long wavelength input optical signal into a differential (or single) output. It is a highly reliablemodule with excellent performance.
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Network OTDR
NFO series
The NFO OTDR unit injects the laser pulse into the fiber under test and picks up scattered and reflected optical signals by an avalanche photodiode (APD). The unit accepts remote commands from Internet to control all related timing and data acquisition processes. Maximal three wavelengths are available at the NFO with options on 1310, 1490, 1550, and 1625 nm. NFO also has options on dynamic ranges so users can select the most cost effective units for their demands. Radiantech provides an easy use API (Application Program Interface) for NFO so users can design and build their own AP for NFO. Standard NFO API package is for Windows XP or higher. Please contact Radiantech’s sales person to inquire API for another OS.
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Avalanche Photodiodes
Excelitas offers Avalanche Photodiodes (APDs) on both Silicon (Si) and InGaAs materials. Si APDs cover the spectral range of 400 nm to 1100 nm and the InGaAs APDs cover 950 nm to 1550 nm. An Avalanche Photodiode (APD) provides higher sensitivity than a standard photodiode and is for extreme low-level light (LLL) detection and photon counting.
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Handheld Laser Power & Energy Meter
Vega 7Z01560
*Compatible with all standard Ophir Thermopile, BeamTrack, Pyroelectric and Photodiode sensors*Brilliant color large size TFT 320x240 display*Clear screen color for work with laser safety goggles*Illuminated keys for working in the dark*Both digital and analog needle display*USB and RS232 output to PC with Statistics package*Select between English and Japanese interfaces*Analog output*Soft keys and menu driven functions with on line help*Log every data point at up to 4000Hz with pyroelectric sensors*Non-volatile data storage up to 250,000 points*Laser tuning screen and power log*2 position kickstand*System Integrator Tools included: LabVIEW VIs, COM Object Interface
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Photodiodes
Opto Diode manufactures high quality standard and custom photodiodes. Our wide range of standard device feature low dark current and low capacitance. The silicon detectors are ideal for general purpose applications, laser monitoring, position sensing, measuring photons, electrons, or X-rays, or for detecting sun and rain applications. The devices operate from the deep UV to the near-infrared wavelengths.
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2x8 Coherent Mixer With Single-ended Photodetectors
This page defines the requirement of a special coherent receiver with 8 single-ended photodiode outputs, per customer request. The coherent mixer, consisting of two polarization-diversified 90deg optical hybrids, a polarizing beam splitter and a beam splitter, is exactly same as existing DP-QPSK coherent mixer, and therefore offering same optical performance.
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10G APD Photodiodes
Macom Technology Solutions Holdings Inc.
MACOM offers the highest sensitivity avalanche photodiodes (APD) on the market to satisfy 10Gtelecom and datacom applications. Both front-illuminated and back-illuminated chips are available and usable from 1250 to 1650 nm for bit rates up to 11.3 Gb/s. Proprietary designs enable superior bandwidth, excellent temperature stability and high reliability to support market needs.
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High-Speed Digital Output
High-speed digital output photocouplers (optocouplers) are optically coupled high-speed, totem-pole output isolators containing a GaAlAs LED on the input side and a photodiode and signal processing circuit on the output side in a single chip.
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Pulse Characterization Sensors
Pulse Characterization Sensors provide the ability to see and measure the temporal characteristics of pulsed and CW laser beams. Ophir Fast Photodiode Detectors are designed to convert optical signals into electrical signals which are then measured with third-party instrumentation such as oscilloscopes and spectrum analyzers. Accessories are available to connect to IS6 integrating spheres or fiber optic cables. Attenuating filter accessories are also available to increase their dynamic range. Different models offer silicon, UV enhanced silicon and InGaAs PIN photodiodes, covering a combined spectral range of 193 nm to 1700 nm. Rise times range from 25 picoseconds to 3 nanoseconds. The fast rise times are achieved by an internal reverse bias voltage circuit. Power is supplied by internal batteries and/or an external power supply depending on the model. Detectors should be connected to a 50Ω impedance in order to maintain their nominal rise times. They can be connected to higher impedance loads, but this will result in a significant increase in the rise time. If higher output voltage is required, it is recommended to connect the detector to a trans-impedance amplifier with an Input impedance of 50Ω
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350 MHz Preamplifier
SIM914
Stanford Research Systems, Inc.
The SIM914 350 MHz Preamplifier contains two wide-bandwidth, DC-coupled amplifiers, each with a gain of 5 (14 dB). Its fast rise time, low noise and excellent DC accuracy make it an ideal instrument for amplifying signals like those from photomultiplier tubes and photodiodes.
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*Photodiode Energy Sensors
Ophir photodiode laser energy sensors are able to measure low energy pulses down to 10pJ at frequencies up to 20 kHz. Silicon photodiodes for the UV and visible spectrum and Germanium photodiodes for infrared.
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SWIR InGaAs Sensors
Xenics is a vertically integrated SWIR detector and camera company. Xenics designs and develops ROICs (read-out integrated circuits) for SWIR imaging detectors.Furthermore, Xenics develops SWIR imaging detectors based on InGaAs (indium gallium arsenide) photodiode arrays. These SWIR detectors are used in Xenics SWIR camera products, but can also be offered as such to customers who require a detector-based solution. In addition to standard products, Xenics can also offer customized solutions.
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2D CMOS Image Sensor
Lince6M5
Lince6M5 is a single chip, fully digital, high speed CMOS active pixel sensor which is designed for maximum flexibility. It has excellent performance in a large variety of applications, ranging from low noise, high dynamic range surveillance, to high speed slow motion analysis, including high resolution machine vision applications. Lince6M5 incorporates a high speed 6.5MP CMOS active pixel image sensor providing both global and rolling electronic shutter, as well as High Dynamic Range (HDR) features. The sensor array utilizes active CMOS pixels with pinned photodiodes to deliver high image quality whilst maintaining the size, cost, and integration advantage of the CMOS technology.
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Wavelength Meter
HighFinesse/Ångstrom offers sensitive and compact wavelength meters with a large spectral range for high speed measurement of lasers. The optical unit consists of temperature-controlled Fizeau-based interferometers that are read out by photodiode arrays. The high absolute accuracy is achieved by use of solid state, non-moving optics.
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Photo Detector with Integrated Transimpedance Amplifiers
ADN3010-11
Analog Devices optoelectronic amplifiers include a range of germanium photodiodes that, through a proprietary process, have been monolithically integrated with silicon transimpedance amplifiers and limiting amplifiers. This process eliminates the need for bond wires connecting the photodiode to the transimpedance amplifier, which leads to improved performance and greater manufacturing reliability. Our portfolio of products also supports the growing need for optical and electrical interface miniaturization.
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40Gb/s DQPSK Receiver
The integrated DQPSK receiver incorporates an optical phase demodulator (delay-line interferometer or DLI) with 2 pairs of balanced photo-diodes and 2 linear TIAs into a single butterfly package. Compared with the currently available discrete solution in which a separate DLI and a separate receiver are used, the integrated DQPSK receiver eliminates labor intensive fiber routing and coupling (between the DLI and the balanced receiver) as well as the skew control. Moreover, the integrated DQPSK receiver offers a smaller footprint suitable for today’s demanding high speed transponder applications.
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50/100G PAM4 Pin Photodiodes
Macom Technology Solutions Holdings Inc.
MACOM offers high sensitivity PIN photodiodes with industry leading performance at speeds of 56Gbd / 100G. Proprietary designs enable operation using PAM4 modulation protocols in 50 /100G applications. The high responsivity designs have high reliability and are suitable for use in both tele-communications and datacenter networks. The high bandwidth PIN photodetectors are available in a back illuminated design (highest performance), a front illuminated design (more cost effective) and in both singlet and array form factors
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Handheld Optical Power Meter
JW3211
Shanghai Joinwit Optoelectronic Tech,co.,Ltd
JW3211 optical power meter is a handheld optical power meter, newly released in 2007, which can be used for absolute optical power measurements as well as for relative loss measurements in optic fiber networks. An Ø1.0mm photosensitive area photodiode is used to significantly improve the stability and the reliability. It features ingenious appearance, wide range of power measurement, high accuracy, user self-calibration function and reference power level storage.
