A High-performance Variable Optical Attenuator

The AQ2200-311A ATTN module is a variable optical attenuator capable of adjusting optical output with high precision over the wavelength range of 1200 nm to 1700 nm (SM version). The ATTN module’s output can be varied in steps of 0.001 dB over a wide attenuation range of 0 to 60 dB (SM version). In addition, this attenuator provides the low insertion loss, low polarization dependence, and high return loss needed in a variable optical attenuator for optical system test. With the optional monitor output connected to a sensor module, it is possible to create programs to precisely control the optical output power.
Multi-mode version is also available.

Item	Product specifications
Wavelength range	1200 to 1700 nm	800 to 1370 nm
Insertion loss	1.0 dB (typ.) 1.6 dB or less
Maximum attenuation	60 dB	45 dB
Attenuation accuracy	±0.1 dB or less
Repeatability	±0.01 dB or less
Optical return loss	45 dB or more (PC connector)	20 dB or more (PC connector)
Polarization dependence	0.1 dB or less	-
Maximum input power	+23 dBm
Shutter isolation	90 dB or more
Applicable fiber	SMF (ITU-T G652)	MMF (62.5/125) (IEC 60793-2)
Optical connector	FC/PC or SC/PC
Monitor output	-13 dB (typ.)

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