Variable Optical Attenuators

Single-crystal silicon is an ideal material for miniature mechanical devices. Silicon is inexpensive and has virtually no hysteresis and hence almost no energy dissipation, as well as little fatigue to ensure service lifetimes over trillions of flexing cycles without breaking. The lightweight and thin format enables optic devices with improved vibration resistance and compactness. Based on proprietary Si micro-machined VOA chips, Agiltron’s MEMS Electrical Fibre Optic Attenuator family features industrial leading performance in low insertion loss, low WDL/PDL, and low cost. The MM VOAs are conveniently controllable by directly applying a voltage. The MM VOA series is in full compliance with the Telcordia 1209 and 1221 reliability standards. We offer a wide range of configurations covering singel mode, multi-mode, polarisation maintain, single channel, multi-channels, and integrated tap versions.BBN International supplies Agiltron MEMS VOAs

The NanoSpeed™ High Speed Variable Optic Attenuator family features ultra-fast sub-millisecond response, non-mechanical high reliability, and a wide operating temperature range from -50°C to +90°C. These VOAs are designed to meet the most mission-critical high speed optical switching applications. The patent pending NanoSpeed™ VOA is non-mechanical, controlled by an electrical filed inside an inorganic optical crystal to facilitate fast light intensity control. With a compensation technique, the out-put light intensity is highly stable against environmental variations. Having an integrated electronic driver, the switch is conveniently controllable by a low voltage with speed up to 150KHz. The high speed VOA can also be operated at a fixed 5MHz with full attenuation. With partial attenuation, the high speed VOA can be modulated up to 500KHz.BBN International supplies Agiltron NanoSpeed VOAs, Agiltron NanoSpeed Variable Optical Attenuators, Agiltron NanoSpeed Variable Optical Splitters

The High Precision Series VOA is based on a micro-electro-mechanical system (MEMS) device platform driven by a mini-motor integrated with an optical position sensor. It uniquely offers advantageous performances that are unmatched in the industry. It features ultra-broadband from 200 to 2500nm, ultra-low insertion loss of less than 0.2dB, ultra-high setting precision, high optical power handling, and latching function. Once, the VOA attenuation value is set, it will latch to and remain at the value regardless of the environment variations and the loss of electrical power. It is available with all types of fibres having a 125 micron outer diameter.
The VOA is driven by a attached PCB having USB or RS232 computer interfaces with GUI software. A USB connection will provide sufficient power for the device. A wall-mount 12V DC supply is provided for RS232 function.

• High precision
• Wide attenuation range
• Low insertion loss
• Compact size