Fiber optic amplifiers re-amplify an attenuated signal without converting the signal into electrical form

Diode lasers use light-emitting diodes to produce stimulated emissions in the form of coherent light output. They are also known as laser diodes.

Fiber optic receivers are instruments that convert light into electrical signals. They contain a photodiode semiconductor, signal conditioning circuitry, and an amplifier

Charged coupled device (CCD) image sensors are electronic devices that are capable of transforming a light pattern (image) into an electric charge pattern (an electronic image).

Complementary metal oxide semiconductor (CMOS) image sensors operate at lower voltages than CCDs, reducing power consumption for portable applications. Analog and digital processing functions can be integrated readily onto the CMOS chip, reducing system package size and overall cost

Phototransistors are solid-state light detectors with internal gain that are used to provide analog or digital signals. They detect visible, ultraviolet and near-infrared light from a variety of sources and are more sensitive than photodiodes. This category includes photodarlingtons. 

Photosensor modules are compact light detectors with built-in power supplies. They use photomultiplier tubes, avalanche photodiodes, PN photodiodes, or PIN photodiodes.

Industrial laminates are products made by bonding together two or more layers of material. Laminates vary from flexible foil film laminates to rigid circuit board materials.

Automated test equipment (ATE) is used to monitor and control test and measurement devices, keeping human interaction at a minimum.

Frequency-to-voltage converters accept a signal and convert its frequency to a corresponding analog voltage level.

Semiconductor metrology instruments are designed for wafer and thin film in-line inspection after semiconductor processing. They include capacitance gages, C-V systems, electron beam probes, ellipsometers, interferometers, I-V system, magnetometers, optical systems, profilometers, reflectometers, resistance probes, RHEED systems, and X-ray diffractometers.  

RF amplifiers are devices that accept a varying input signal and produce an output signal that varies in the same way, but with larger amplitude

Instrumentation amplifier chips are precision amplifier circuits with both high-impedance differential inputs and high common-mode rejection

Audio amplifiers are used in circuits and systems to process audio signals

Semiconductors (metalloids) or semiconductor materials are used to fabricate microelectronic and optoelectronic devices such as transistors, photodetectors or solar cells