Datasheet check
Paste datasheet lines and see which specifications lack conditions, units or limits.
Browser tools for filter and photodiode specifications
Each tool runs in the browser. Inputs stay on your device; a copied link or a printed sheet carries only what you choose to share.
Check and specify
Spec your filter
Step through the questions a filter supplier asks and print the request-for-quote sheet.
Optical filter RFQ checklist
The parameters a supplier needs to quote a filter, as a checklist you can print.
Photodiode front-end design review checklist
Review points for a photodiode front end: bias, transimpedance stage, noise, bandwidth and layout.
Compute
Filter passband against tilt and f-number
Drag the angle and f-number and watch a narrow passband shift and smear.
TEC heat load and required ΔT
Heat a TEC must pump for a laser diode module, with current, voltage and hot-side heat.
Optical density of a filter stack
Blocking of up to three filters in series, with and without reflections between them.
Filter shift with angle of incidence
Center wavelength shift from filter tilt, including a converging beam.
Thin-film reflectance calculator
Layer stack editor with s, p and average reflectance and transmittance, and the coating color.
Gaussian beam propagation calculator
Spot radius, new waist and Rayleigh range of a Gaussian beam with M² through a thin lens.
Interactive photodiode datasheet
A photodiode datasheet whose curves and values recompute from the bias, area and temperature you set.
Read
Spec glossary
Terms on filter and photodiode datasheets with their equations, several of them live.
One number, explained
Five short pages that each take one datasheet number apart with a live calculator.
Start with a free review of your technical content
Get a one-page comparison of your technical content with two competitors, three recommended documents or tools, and a price for the first project.