Agilent Technologies Agilent 8164A Guia do Utilizador descarregar pdf (Página 36)

Specifications Definition of Terms

36 Agilent 81600B Tunable Laser Source Family, Fourth Edition

General Definitions

Attenuation mode

An operation mode where the output power is adjusted using the built-in

attenator, rather than by changing the current of the laser diode.

Constant Temperature

Where required, is a stable operating temperature within ±1 K.

Logged wavelength

This is the wavelength measured and recorded by the internal wavelength

meter during a sweep at the corresponding trigger signal. This recorded

wavelength can be read with the logging function.

Stepped mode

In stepped mode the tunable laser source is operated statically, so that a

user's measurement is made at a fixed wavelength of the tunable laser

source. When tuning to a new wavelength, the static specifications are

valid after completion of the tuning operation.

Continuous sweep mode

In continuous sweep mode the tunable laser source is operated

dynamically, so that a user's measurement is made while the wavelength

of the tunable laser source changes in a defined way (given by start

wavelength, end wavelength and sweep speed). During a continuous

sweep the dynamic specifications and the “Logged wavelength” applies.

Applicable only to Tunable Laser Source modules that include a built-

in attenator.

NOTE

The logged wavelength positions during a sweep depend on

environmental conditions and may differ slightly between repeated

sweeps.

NOTE

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Agilent Technologies Agilent 8164A Guia do Utilizador Página 36