Planet Briefing

First published · Last updated

Electro-optic tunable bandpass filter based on long-period-grating-assisted asymmetric waveguide coupling

A journal article presenting an electro‑optic tunable bandpass filter design that uses long‑period grating–assisted asymmetric waveguide coupling. Published by SPIE (SPIE-Intl Soc Optical Eng.) on 2007-04-01.

Photograph of an optical interference filter . A stack of thin films coated onto the round 1/2-inch substrate acts as a high-transmitting bandpass filter at 780nm with a pass-band of few nm. Light at other wavelengths in the stop-band a few 100nm around are fully reflected. Over the whole optical spectrum the filter looks semi-transparent, reflecting bright background light in this image.
Illustrative image: Photograph of an optical interference filter . A stack of thin films coated onto the round 1/2-inch substrate acts as a high-transmitting bandpass filter at 780nm with a pass-band of few nm. Light at other wavelengths in the stop-band a few 100nm around are fully reflected. Over the whole optical spectrum the filter looks semi-transparent, reflecting bright background light in this image. — Geek3/Wikimedia Commons, CC BY-SA 4.0

Categories: science-and-space, technology

Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence
6/10
Geographic reach
2/10
Global importance
3/10
Impact magnitude
3/10
Positivity
6/10
Urgency
1/10

Why it matters

Describes a research design for a tunable optical filter relevant to photonics and optical-device research.

Sources

Report an issue