The whole system include:

• Tunable Laser Source (TLS)
  Choice of two different modular
  two-slot tunable laser sources:
  - The IQ-2600 covers the 1520 nm to 1570 nm (C-band) range
  - The IQ-2600BT covers the 1510 nm to 1612 nm (C+L-band) range
• IQ-9401 Wavelength Reference
  Module (WRM)
  - A two-slot module
  - Gives fast and accurate absolute wavelength reference
  - Provides dynamic power reference for attenuation and polarization dependent loss (PDL) measurements
  - Performs the optical return loss (ORL) measurements
  - Provides synchronization signal
• IQ-5150 Polarization State Adjuster
  (PSA)-(Optional)
  - A two-slot module
  - Generates four orthogonal states of polarization
  - Designed around bulk-optic components
  - Uses the Mueller Matrix calculation method for PDL measurement
  - No fiber handling required
• IQ-1643T Power Meter (four channels)
  - Four detectors in a one-slot module
  - Optimized for low polarization dependence
  - Optimized for low spectral interference
  - Optimized for fast autoranging
  - Direct memory access for fast data transfer
  - High sensitivity for high-loss measurements
   
  

    The optimum performance of DWDM systems and subsystems depends on the fast and accurate characterization of multiplexers, demultiplexers, filters and other passive components. Developers and manufacturers must test and control important parameters throughout the entire life cycle of a component, from research through to development, production and even deployment. These parameters include insertion loss, spectral uniformity, bandwidth, crosstalk, channel central wavelength, polarization dependence and optiive components generates vast quantities of data. The IQ-12004B system has been designed to take advantage of internal high-speed data transfer, resulting in reduced measurement and data transfer time.