Narrow Bandpass Optical Filter 440nm For Optical Communication

A narrow bandpass optical filter 440nm is a type of optical filter that only allows light within a specific wavelength range centered around 440nm to pass through while blocking other wavelengths of light. It is designed to transmit a narrow band of wavelengths, typically with a full-width half-maximum (FWHM) of less than 10nm, while suppressing all other wavelengths.

Our filters at 440nm are designed and manufactured to have a desirable high transmission rate of 80% or more with an ultra narrowband of 10nm, ensuring that only the desired wavelength range is transmitted and any other unwanted wavelengths are effectively blocked. They are also as smooth as possible with minimal variations or ripples within the selected wavelength range and perform great concerning durability.

Features

- Ultra-narrowband

- High level of transmission rate

- High contrast

- Hard durability

- Stable environmental coating

- ISO9001, ROHS certified

Parameters

Spectrum transmission curve

Applications

440nm narrow bandpass filters are versatile and valuable components in many scientific and industrial applications that involve the measurement or manipulation of light in the blue-green region of the visible spectrum. Here are the examples:

- Fluorescence microscopy

- Spectroscopy

- Colorimetry

- Optical communication

- Environmental monitoring

How does a 440nm bandpass filter apply in optical communication?

In optical communication systems, a narrow bandpass optical filter 440nm can selectively filter out specific wavelengths of light from the optical signal, which is essential because optical signals in fiber optic communication systems can suffer from attenuation and dispersion as they propagate through the fiber, reducing the signal quality and limiting the distance it can travel.

The filter can filter out unwanted wavelengths of light that can interfere with the optical signal and degrade its quality. For example, in wavelength-division multiplexing (WDM) systems, multiple optical signals at different wavelengths are transmitted simultaneously over a single optical fiber. Narrow bandpass filters can isolate each wavelength and prevent crosstalk between other channels.

In addition, the 440nm bandpass filter can be used to improve the signal-to-noise ratio of the optical signal. By filtering out unwanted wavelengths, the signal can be amplified without amplifying noise, which enhances the overall quality of the signal.

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