User`s guide

Agilent 81618A/9A and Agilent 81623B/4B/6B/8B Optical Heads, Fourth Edition

Specifications

The Agilent 81618A/9A Optical Head Interface Modules and

Agilent 81623B/4B/6B/8B Optical Heads are produced to the ISO 9001

international quality system standard as part of Agilent Technologies’

commitment to continually increasing customer satisfaction through

improved quality control.

Specifications describe the modules’ and heads’ warranted performance.

Supplementary performance characteristics describe the modules’ and

heads’ non-warranted typical performance.

Because of the modular nature of the instrument, these performance

specifications apply to these modules and heads rather than the

mainframe unit.

Definition of Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Linearity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Averaging Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Linewidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Reference conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Power range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Wavelength range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Relative uncertainty (spectral ripple) due to interference . . . . 26

Relative uncertainty due to speckle noise . . . . . . . . . . . . . . . . . 27

Relative uncertainty due to polarization . . . . . . . . . . . . . . . . . . . 27

Return loss. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Spectral width of optical source. . . . . . . . . . . . . . . . . . . . . . . . . . 28

Total uncertainty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Uncertainty at reference conditions . . . . . . . . . . . . . . . . . . . . . . 28

Optical Head Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 29

Supplementary Performance Characteristics . . . . . . . . . . 35

Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35