The new generation of multi-mode programmable optical attenuator integrates years of technological iterations and

innovations, and comprehensively upgrades the product. Attenuation accuracy, speed, range and other indicators

have been comprehensively upgraded.The new attenuator has a built-in power meter for closed-loop monitoring of

output power and supports multiple operating modes, perfectly adapting to the application scenario of testing the

sensitivity of 800G/1.6T optical modules.

Main Features

• Multi-mode ring flux control, calibration with multiple light sources

• Large attenuation range (MM>55dB, SM>40dB)

• Lower insertion loss, 200% increase in attenuation rate

• Ultra-high attenuation accuracy and repeatability

• Built-in power monitoring, three control modes

• Supports custom task settings and programming

Main Applications

• 800G optical module testing

• Optical path loss simulation

• Optical device BER (Bit Error Rate) testing

• EDFA (Erbium-Doped Fiber Amplifier) manufacturing and inspection

• WDM (Wavelength Division Multiplexing) power balancing

Strictly control multi-mode EF (Encircled Flux), adaptable to different types of light source injection

Due to the different encircled fluxes when different multi-mode lasers transmit within the optical fiber, there will be significant errors

in the calibration data of the attenuator without calculating EF. Dimension Technology's multi-mode attenuator, through the mode

controller and strict encircled flux detection equipment, strictly controls the EF within the standards of IEC-61280-1-4 and

TIA-455-203, ensuring good testing accuracy under the injection of different light sources.

Test results after optimization: attenuation linearity ±0.10dB

Ultra-low insertion loss and ultra-fast attenuation speed

The next-generation programmable optical attenuator, through optical path structure optimization, has achieved a further reduction

in insertion loss (SM<1.0dB, MM<2.0dB). At the same time, the optimized design structure can meet higher attenuation rate

requirements. The rate of mechanical attenuators has been upgraded from 25dB/s to 50dB/s, with full-range attenuation in 1.2

seconds; MEMS attenuators have been increased from 1000dB/s to 2000dB/s.

Built-in power monitoring with semi-open loop detection, controlling attenuation in three modes

To accurately measure the power value after attenuation, POA has added an optional optical power meter component after the

attenuation optical path, monitoring the optical path attenuation in a semi-open loop. With the addition of the power meter, real-time

feedback adjustment is made in power monitoring mode, achieving an attenuation accuracy of ±0.10dB.

The all-new generation of attenuators has been designed with three control modes to cater to different application scenarios and

meet various needs:

Specifications［1］

Ordering Information

［1］Test wavelength:1310 nm/1550 nm for single-mode,850 nm/1300 nm for multimode.

［2］Including connectors.

［3］All the specfication are tested in 23℃±3℃.

［4］SM MEMS only can be chosen POA3X09C.