BP1535-6 대역 통과 필터(CWL=1535nm, FWHM=6nm)

Laser Rangefinding (LRF)

This is the primary application. Military and commercial rangefinders use this filter on the receiver to block sunlight and ensure they only detect the returning laser pulse.

Recommended Light Sources

To use this filter effectively, you must use a light source that emits precisely at 1535 nm.

• Er:Glass Lasers (Erbium-Doped Glass):Type: Solid-state laser.Use Case: This is the standard source for high-energy, long-distance laser rangefinding (1–20 km). It emits a powerful pulse exactly at 1535 nm.
• 1535 nm Laser Diodes:Type: Semiconductor laser.Use Case: Used for shorter-range applications, communications, or illumination. They are more compact but typically have lower pulse energy than Er:Glass.
• ASE Sources (Amplified Spontaneous Emission):Use Case: Sometimes used in testing or optical communications, though less common for the "BP1535-6" narrow filter application compared to pulsed lasers.

Free-Space Optical Communications

Used to filter noise in secure optical communication links that operate in the SWIR band.

Recommended Light Source

• For the Free-Space Optical Communications (FSOC) application using a BP1535-6 Bandpass Filter, the recommended light source is a 1535 nm Distributed Feedback (DFB) Laser Diode.