SPECTROLIGHT’s POLY-RED Tunable Bandpass Filter will be on display at CIOE 2026 in Shenzhen, China.
Visitors interested in flexible wavelength selection and bandwidth control will have the opportunity to see POLY-RED operating in person at the exhibition.

ㅣTunable Wavelength & Bandwidth Control
The POLY Tunable Bandpass Filter series is designed for applications that require flexible control of both center wavelength and bandwidth.
Depending on the required spectral region, users can select a wavelength range within 255–1700 nm and configure the system for their application.
Within the selected wavelength range, the center wavelength can be tuned in precise 1 nm steps, while the bandwidth can also be adjusted according to the system configuration.
This enables users to create various optical conditions with a single tunable filtering system, without repeatedly exchanging multiple fixed bandpass filters.

ㅣSee POLY-RED in Person
At CIOE 2026, POLY-RED will be demonstrated in operation, allowing visitors to see how the selected wavelength can be changed and controlled in real time.
If your application requires tunable wavelength and bandwidth control within the 255–1700 nm spectral region, feel free to stop by and see POLY-RED in action.
Our SPECTROLIGHT team will also be visiting CIOE during the exhibition and will be available to discuss your application and wavelength requirements.

ㅣEvent Information
-Event: CHINA INTERNATIONAL OPTOELECTRONIC EXPOSITION
-Date: September 9–11, 2026
-Venue: Shenzhen World Exhibition & Convention Center, Shenzhen, China
-Product on Display: POLY-RED Tunable Bandpass Filter
-Booth: ZOLIX | 4B045

Looking for flexible wavelength and bandwidth control? Visit Booth 4B045 and experience POLY-RED at CIOE 2026.