942053999-40

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942053999-40 distributed feedback lasers (DFB) are semiconductor lasers commonly utilized in numerous application fields. Such lasers are characterized by employing an integrated optical grating as an external cavity feedback element, which can provide single longitudinal mode emission and makes them suitable for coherent applications. When gated in a pulse mode or powered with relatively high current densities, they can exhibit extremely short pulsewidths of the order of picosecond timescales. This makes them suitable for numerous applications, such as optical communication, laser radar, and fractional-N PLL, among others.

In terms of working principle, the distributed feedback laser utilizes a long length of waveguide with an integrated grating where the grating acts as a feedback element that allows for single longitudinal mode emission to occur. The grating is formed on the surface of the waveguide and can be under either phase or amplitude modulation in order to create the laser wavelength peaks. The optically active material is embedded in or near the waveguide, such as a quantum well, and the gain medium must exceed the total feedback of the cavity provided by the waveguide and grating elements.

Various applications utilizing 942053999-40 distributed feedback lasers are defined by its wavelength, power output, and pulse duration. In optical communication systems, 942053999-40 distributed feedback lasers are typically used for data encoding, communication links, and signal transmission. For laser radar applications, the pulse length provided by these lasers allows for the accurate detection of objects with long range distances. Additionally, the fractional-N PLL utilizes the distributed feedback laser as an oscillator, whose output is used to generate clock signals which are essential for maintaining precise timing in high-speed data communication systems.

In conclusion, 942053999-40 distributed feedback lasers possess dedicated physical properties that make them ideal for implementation in a variety of application fields, particularly communication systems, laser radar, and fractional-N PLL. Their laser design allows for single longitudinal mode emission, while their pulse length and output power are also adjustable. These distributed feedback lasers provide a strong source of light for many uses, contributing to a wide range of optical technologies.

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