850nm multimode electrically variable optical attenuator

850nm multimode electrically variable optical attenuator

Supplier
Zg-photonics
Category
Fiber Optic Attenuators
Origin
China

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.

Specification Snapshot
Wavelength Range
800~1100 nm
Insertion loss [with connector, within wavelength range]
1.0 dB
Storage Temperature
-40 ~ 85 °C
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Overview

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.

Specifications

ParameterValue
Wavelength Range800~1100 nm
Attenuation range30 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 %
Repeatability0.1 dB
Backlash0.2 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/output0.15 ps
Carrying optical power [CW]300 mW
Motor typeStepper 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 stepMin:1.25 ms;Typ:2.0 ms
Motor resistance20
Motor power consumption [within the -5~70℃ temperature range]2 W
Operating Temperature-5 ~ +70 °C
Operating Humidity5 ~ 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

Data centers and local area networks; optical fiber communication systems; scientific research and education; optical fiber sensing systems; optical communication equipment testing systems

Key Features

High-precision attenuation control; low insertion loss; high stability; low polarization dependent loss (PDL); miniaturization and integration

Datasheet

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Supplier Information

Zg
Zg-photonics
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Sichuan Ziguan Photonics Technology Co., Ltd. was established in March 2015, located in Mianyang, the Science and Technology City of China. It is mainly engaged in the R&D, design, production, and sales of optical communication equipment and optical communication chips; it is a high-tech enterprise in optical communication with independent R&D capabilities and large-scale production capacity. Since its establishment, Ziguan Photonics has continuously invested in R&D and attracted technical talents in the communication industry. The company's projects are led by PhDs, with masters and bachelors collaborating in research and development. The company's products are increasingly diversified, including optical switches, optical attenuators, fiber delay lines, silicon-based optical chips, polarization controllers, MEMS optical switches, high-speed photodetectors, silicon-based high-speed devices, pulsed fiber lasers, femtosecond fiber lasers, semiconductor lasers, and optical path protection equipment (OXC). At the same time, the company also provides core high-precision optical components for lidar systems, quantum communication systems, laser fusion imaging transmission systems, etc. Among them, fiber delay lines, optical switches, and optical attenuators are mass-produced products with core technologies, and the product technologies have obtained multiple patent certifications, including 6 invention patents, and a total of 16 appearance, software copyright, and utility model patents. In 2024, the Xi'an Technology Center was established, focusing on three major fields: radio frequency, radar, and high-speed optoelectronic systems, dedicated to the industrialization of cutting-edge technologies. In the field of RF technology, it has full-chain capabilities from chip design to system integration. Its self-developed RF transceiver modules support ultra-wide frequency bands such as 0.1GHz~18GHz, and the innovative adaptive interference suppression algorithm can dynamically optimize signals to ensure communication stability in complex environments. In the field of radar technology, products cover industrial surveying (clearance radar), security (phased array), meteorology (wind measurement radar), etc., providing key data and early warning efficiency for wind power generation and regional security. Currently, it is exploring the integration of radar and AI, using machine learning to improve target recognition accuracy and response speed. In the field of high-speed optoelectronic systems, in response to the urgent demand for high-speed data transmission in scenarios such as data centers and supercomputing centers, we have developed high-speed acquisition card series, high-speed optical attenuation matrices, and other products, using silicon photonics technology to achieve low-loss, high-stability, and high-speed transmission, breaking through the bottleneck of traditional optoelectronic conversion. In 2026, the Wuhan Optoelectronics R&D Center was established, dedicated to breakthroughs in ultrafast and high-power laser technologies such as high-speed fiber lasers and femtosecond lasers, as well as the R&D and production of fiber amplifiers. In the same year, the Jiaxing Optical Chip R&D Center was established, focusing on the potential needs of future AI computing centers, drones, robots, medical equipment, microwave photonic radar, etc., specializing in the process R&D and manufacturing of silicon-based optical chips, ferroelectric crystal (thin-film lithium niobate, poled electro-optic polymer, PZT) modulation chips, III-V (GaAs/InP) chips, and subsequent chip packaging processes, consolidating the core chip foundation. The company has more than 150 customers and has established long-term stable strategic cooperation with well-known enterprises and institutions such as Huawei, AVIC, CETC, CAEP, universities, and aerospace. The company has successively obtained honorary titles such as "Technology-based Small and Medium-sized Enterprise", "National High-tech Enterprise", "Mianyang Civilized Youth", "2016 Honest Entrepreneurial Youth", "Military-Civilian Integration Enterprise", "2019 Outstanding Unit in Intellectual Property Work", etc. Sichuan Ziguan Photonics Technology Co., Ltd. adheres to the principle of technological innovation and has always integrated innovation into the core values of the enterprise. The company emphasizes a harmonious corporate innovation atmosphere and provides a broad development platform for every employee; in internal management, it attaches great importance to team spirit, promotes the development of the enterprise with the team's collective creativity, and is more systematic and professional, continuously providing customers with high-quality and comprehensive services, making Ziguan Optical Communication's products at the forefront of the industry.

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850nm multimode electrically variable optical attenuator
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