Pulsed Erbium-doped Fiber Amplifier Manufacturers

Semiconductor Optical Amplifier (SOA) utilizes semiconductor materials as the gain medium, enabling direct optical signal amplification without prior conversion to electrical signals. This unique property not only simplifies the optical amplification process but also lays the foundation for more efficient and compact optical systems.

The fiber optic current sensor is a smart grid device whose principle uses the Faraday effect of magneto-optical crystals.

An electro-optic modulator (EOM) is a device that controls the power, phase or polarization of an optical signal through an electrical signal. Its core principle is based on the linear electro-optic effect (Pockels effect). This effect manifests itself in that the applied electric field is proportional to the refractive index change of the nonlinear crystal, thereby achieving effective control of the optical signal.

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Semiconductor laser is a kind of laser developed in the 1960s, using semiconductor materials as working materials. Since the end of the 1970s, semiconductor lasers have clearly developed in two directions. One type is information-type lasers for the purpose of transmitting information, and the other type is power-type lasers for the purpose of directly using the optical power of the output laser.

Vertical cavity surface emitting laser is a new generation of semiconductor laser that has been developing rapidly in recent years. The so-called "vertical cavity surface emission" means that the laser emission direction is perpendicular to the cleavage plane or substrate surface. Another emission method corresponding to it is called "edge emission". Traditional semiconductor lasers adopt an edge-emitting mode, that is, the laser emission direction is parallel to the substrate surface. This type of laser is called an edge-emitting laser (EEL). Compared with EEL, VCSEL has the advantages of good beam quality, single-mode output, high modulation bandwidth, long life, easy integration and testing, etc., so it has been widely used in optical communications, optical display, optical sensing and other fields.