850nm multimode electrically variable optical attenuator
The 850nm multimode electrically variable optical attenuator is a new miniature variable attenuator from Sichuan Ziguan Optoelectronics, applicable to the C or L band. This optical attenuator has good wavelength flatness correlation, low polarization dependent loss (PDL), and improved temperature stability. The attenuator provides an economical solution for optical power. The reflective optics allow same-side jumper exit and make panel installation easy. The attenuator uses an advanced gradient neutral density filter as the attenuation element. Adjustment is via a feedback control terminal of a stepper motor. The stepper motor driver moves the motor up and down in uniform steps, providing fine resolution. Locking operation is a standard feature; after removing the drive voltage, the most recent attenuation setting is retained. An optional resistance reading is used for filter positioning.
Overview
Specifications
| Parameter | Value |
|---|---|
| Wavelength Range | 800~1100 nm |
| Attenuation range | 30 dB |
| Response speed @3dB adjustment attenuation resolution [voltage drive mode] | 100 ms |
| Attenuation resolution [full step] | 0.2 dB |
| Locking stability [according to motor power switch] | 0.3 dB |
| Insertion loss [with connector, within wavelength range] | 1.0 dB |
| Attenuation linearity [30db@±0.5db] | 5 % |
| Repeatability | 0.1 dB |
| Backlash | 0.2 dB |
| Return loss@input/output [with connector; input/output] | -25 dB |
| Polarization dependent loss@input/output [measured from input port to output port over the entire adjusted wavelength range; input/output] | 0.5 dB |
| Temperature dependent loss [measured from input to output port@overall adjusted attenuation range] | 0.5 dB |
| Polarization mode dispersion@input/output | 0.15 ps |
| Carrying optical power [CW] | 300 mW |
| Motor type | Stepper motor, 2-phase motor |
| Motor current [2 phases on] | Typ:150 mA;Max:200 mA |
| Recommended DC control voltage [full step and both coils are energized] | Min:3.0 V;Typ:3.3 V;Max:3.6 V |
| Pulse width per step | Min:1.25 ms;Typ:2.0 ms |
| Motor resistance | 20 |
| Motor power consumption [within the -5~70℃ temperature range] | 2 W |
| Operating Temperature | -5 ~ +70 °C |
| Operating Humidity | 5 ~ 95 %RH |
| Storage Temperature | -40 ~ 85 °C |
| Pigtail type (all ports) [according to customer requirements; all ports] | 62.5/125 um or 50/125 um |
| Pigtail length (all ports) [L refers to the fiber length requirement in the PN; all ports] | L+/- 0.1 |
| Connector type (all ports) | According to customer requirements |
Applications
Key Features
Datasheet
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