Photodiode
convert's light into current.
See Also: Diode, Laser Diode, Zener Diode, Diode Test, Photodiode Arrays
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Photodiode
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A high sensitivity receiver in a fiber pigtail coupled package, it includes a high speed InGaAs avalanche photodiode with a high gain TIA in a hermetically sealed coaxial package. It incorporates an LC/UPC pigtail and a flexible printed circuit (FPC). The signal GND and a receptacle are electrically isolated in this APD receiver.
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Laser Diode
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Is a Polarization Maintaining CWDM Coaxial DFB-LD for CWDM analog communication, CATV return-path, laboratory instrument, and R&D applications. This cost-effective, high reliability DFB laser chip has a selectable wavelength with range between 1270 nm to 1610 nm. The versatile DFB-CWDM also features a built-in InGaAsP monitor photodiode, built-in optical isolator and 4-pin coaxial- pigtailed package, single mode coupling, and an FC/APC connector. Contact Optilab for more information.
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High Speed Fiber-Optic Detectors
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High speed fiber-optic detectors use special photodiodes with high speed electronic circuits to convert fast pulses in optical fibers to electrical signals for measurement. Unlike our optical receivers, these photodetectors do not include a transimpedance amplifier.
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Low Input Bias Current Amplifiers (<100 pA)
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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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Avalanche Photodiodes
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These avalanche photodiodes (APDs) are silicon photodiodes with an internal gain mechanism. As with a conventional photodiode, absorption of incident photons creates electron-hole pairs. A high reverse bias voltage creates a strong internal electric field, which accelerates the electrons through the silicon crystal lattice and produces secondary electrons by impact ionization. The resulting electron avalanche can produce gain factors up to several hundred.
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Gesture, Color Sensors & Proximity Detection
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The gesture product family performs advanced gesture detection, proximity detection, digital Ambient Light Sensing (ALS) and color sensing (red, green, blue and clear). It also implements optical pattern generation for barcode transmission and remote controls. The gesture sensor modules provide a highly integrated solution offering five essential functions to enable a touchless interface and to optimize the end user experience of communications and consumer electronics equipment. Gesture detection uses four directional photodiodes to sense IR energy emitted from the integrated LED, converting the measurements of reflected IR light into information about physical
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OLED Life Time Test System
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A system for measuring measurement items (brightness and so forth through Voltage, Current, and Photodiode) and their lifetime in intervals of set time, while supplying power to multiple (32 Channel) OLED panel stably.
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Spectral Light And Color Meter w/ Flicker measurement
BTS256-EF
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Spectroradiometer for the illuminance (photopic, scotopic, melanopic), spectrum, light color, color rendering index, and flicker. Cosine field of view illuminance measurement for accurate evaluation of extended illumination. Flicker measurement. Spectral measurement technology, required for LED light, color, color rendering, color effects. Photodiode for synchronization to pulse width modulated light and flicker measurement.
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Phototransistors
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Phototransistors are photodiode-amplifier combinations integrated within a single silicon chip. The phototransistor can be viewed as a photodiode whose output current is fed into the base of a conventional transistor. These photodiode-amplifier combinations are put together to overcome the major limitation of photodiodes: unity gain. The typical gain of a phototransistor can range from 100 to over 1500.
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Laser Diode Drivers
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Arroyo Instruments offers a broad range of laser drivers to meet your exact test needs. From 100 milliamps to 100 Amps, all of Arroyo Instruments' LaserSource benchtop laser drivers include unique features not found on competing products such as optically isolated photodiode and modulation inputs, programmable PD bias, and both RS232 and USB computer interfaces. The LaserSource also has laser diode protection circuits such as interlock, ESD protection, and hardware limits for current and voltage.
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Wavelength Meter
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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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DWDM High Power DFB Buttterfly Laser
CA1782-XXX-XX-BT
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The CA1782-XXX-XX-BT DWDM High Power DFB Buttterfly Laser component is characterized for use as a CW optical source in CATV and DWDM networks. The CA1782-XXX-XX-BT is dc-coupled with a built-in TEC, thermistor, and monitor photodiode. The device is mounted in a 14-pin, OC-48 pinout compatible butterfly package with the optical isolator mounted on the TEC. The CA1782-XXX-XX-BT incorporates a high efficiency coupling scheme to deliver 40 mW, 50 mW, 63 mW and 100 mW of CW optical power.
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Handheld Power & Energy Meter
Nova 7Z01500
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*Compatible with all standard Ophir Thermopile, Pyroelectric & Photodiode sensors.*Single shot energy measurement with thermal sensors.*Optional RS232 computer interface. Works with Ophir's StarCom32 application.*Power and energy logging with graphical display and statistics.*Laser Power Measurement averaging.*Easy to use soft keys, menu driven.*Screen graphics.*Backlight & rechargeable battery.*Analog output.*EMI rejection.*LabVIEW software included.
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Adjustable Range Reflective Photoelectric Sensor
EQ-30
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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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High-Speed Analog Output
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High-speed analog output photocouplers (optocouplers) are optically coupled isolators containing a GaAlAs LED on the input side and a PIN photodiode and high-speed amplifier transistor on the output side in a single chip.
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Pulse Characterization Sensors
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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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Photodiodes
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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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Light-to-Analog Sensors (Current)
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Renesas' light-to-current silicon optical sensors combine a photodiode array and current amplifiers on a single monolithic IC. These devices are ideal for display and keypad dimming, as well as industrial and medical light sensing applications.
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Light-Transmitting/-Receiving Devices for Optical Communication Systems
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Sumitomo Electric Industries, Ltd.
Various light-transmitting/-receiving devices support the foundation of optical communication systems. The portfolio includes semiconductor lasers and photodiodes for optical transceiver modules and board level design, as well as wavelength-tunable lasers and optical receivers for optical coherent communication devices in the backbone systems.
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Linear Array Detector Cards
X-Card 0.2 to 2.5mm
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A product family of high performance linear X-ray detector cards with preamplifier ASICs. The preamplifier ASIC converts the charge output from the photodiode array into voltage with serial output for easy integration with readout electronics. Can be arranged end-to-end to form large linear detector arrays.
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Fiber Photodiode Power Sensors
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These interfaces provide communication between an attached sensor and a PC or other external control unit. They are designed to be controlled via an external device or operated autonomously using the analog output; there are no controls or display screens.
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Highest SNR PDA Miniature Spectrometer
VS70-PDA
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VS70-PDA OEM Photodiode Array Spectrometer is a high performance compact fiber coupled spectrometer covering wide spectral range of 200 to 1000 nm. This VS70 system for industrial applications uses a modified VS70 optical engine with Horiba’s type-IV Aberration-Corrected Flat-Field Holographic Ion-Etched concave grating optimized for UV-VIS and a linear photodiode array.
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Network OTDR
NFO series
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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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Light Analysis
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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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Two -Dimensional PSD
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Functions according to the Lateral Effect Photodiode principle. It is an analogue device and therefore displays excellent position resolution. The resolution is determined by the system signal-to-noise ratio. It is operated in the biased mode. Typical applications include: distance andheight measurement, alignment, position and motion measurements and vibration studies
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40Gb/s DQPSK Receiver
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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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High Speed Photoreceivers
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Macom Technology Solutions Holdings Inc.
MACOM offers 40G and 50G amplified PIN photoreceivers with high responsivity PIN photodiodes usable from 1200 – 1650 nm. These products are available in butterfly packages with single-mode fiber and coaxial output connectors.
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Sensing System
FBG
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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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350 MHz Preamplifier
SIM914
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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.
