Definition of Terms

Specifications

C.1 Definition of Terms

Attenuation accuracy

The difference between the displayed loss and → excess loss.

Conditions: Attenuation adjustment prior to measurement. That is, adjustment of the measured attenuation at the highest setting so that it equals the attenuation setting, for example by adjusting the wavelength setting.

Measurement: with laser source or LED and optical power meter.

Attenuation range

The range of displayed attenuations.

Excess loss

The difference between actual loss (at an arbitrary attenuation setting) and [rightarrow]insertion loss (at 0 dB setting).

Insertion loss

The change of power levels after inserting the attenuator between two connectorized patchcords, with the attenuation set to 0 dB.

Conditions: Arbitrary wavelength setting, temperature within operating temperature range, jumper cables with high quality connectors.

Measurement: with laser source or LED and optical power.

Polarization dependent loss

The dependence of the attenuation on the input polarization state, expressed as the difference between the highest and the lowest displayed attenuation, in dB.

Conditions: Fabry-Perot type laser source with variable polarization state and polarization-independent power, generation of all polarization states (covering the entire Poincar sphere), jumper cables with high-quality connectors.

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8156A specifications

Agilent Technologies 8156A is a high-performance optical source offering advanced capabilities for testing and characterizing optical systems. Specifically designed for applications in telecommunications and data communications, the 8156A stands out due to its precision, versatility, and reliability, making it an essential tool for engineers and researchers in the telecommunications industry.

One of the main features of the 8156A is its ability to generate a stable, accurate, and tunable optical signal. This optical source operates across a wide wavelength range, typically from 1260 nm to 1675 nm, covering key regions used in fiber optics. The tunable laser module is particularly beneficial for applications requiring the testing of fiber optic components, systems, and networks, enabling users to specify any wavelength within this range.

The device employs advanced technologies, including distributed feedback (DFB) laser technology, offering low noise and high output power while ensuring minimal phase and frequency jitter. This results in precise measurements that are crucial for evaluating the performance of optical devices. The 8156A also features a built-in optical power meter, allowing for seamless integration and real-time monitoring of optical power levels during testing.

Another significant characteristic of the 8156A is its user-friendly interface, which includes easy-to-read displays and intuitive controls. This design simplifies operation, allowing users to set up tests quickly and efficiently. Additionally, it provides various output options, including single-mode and multi-mode fiber interface compatibility, expanding its usability across different applications.

The 8156A is equipped to handle numerous protocols and systems, including passive optical networks (PON), optical transport networks (OTN), and traditional wavelength-division multiplexing (WDM) technologies. Its agility in adapting to various protocols enhances its role in research and development settings.

Moreover, the device offers a range of automation features, enabling users to script complex measurement sequences, making it an adaptable solution for both laboratory and field environments. Combined with its robust build quality, the Agilent Technologies 8156A optical source not only ensures reliable operation but also provides a long service life, making it a valuable investment for any optical testing application.

Agilent Technologies 8156A manual Definition of Terms

Models: 8156A