NIST SRM-2517a High Resolution Wavelength Calibration Reference Standard 1510-1540nm Acetylene Atomic Absorption Lines
Used see photos.
Includes Calibration device, certificate of Analysis (non-expiring/permanent), NIST special publication 260-133 2001-edition, example spectra, and OEM box and packaging. FC/PC connectors.
Purpose: SRM 2517a is designed for calibrating the wavelength scale of instruments, particularly in the optical fiber communication region (1510-1540 nm).
Material: It consists of a single-mode optical-fiber-coupled absorption cell containing acetylene gas at a pressure of 6.7 kPa (50 Torr).
Key Feature: The use of lower acetylene pressure (compared to SRM 2517) results in narrower absorption lines, enabling higher resolution and accuracy in wavelength calibration.
Applications: It can be used to calibrate narrowband tunable lasers or lower-resolution devices like optical spectrum analyzers.
Absorption Lines: Acetylene has over 50 accurately measured absorption lines within the specified wavelength range.
Standard Reference Material (SRM) 2517a is an optical-fiber-coupled wavelength reference based on the fundamental absorption lines of acetylene in the 1510 nm to 1540 nm region. The main difference between SRM 2517a and its predecessor, SRM 2517, is the use of lower pressure in the acetylene cell to produce narrower lines. Thus SRM 2517a extends the use to higher resolution and higher accuracy applications. The center wavelengths of 56 lines of the Vi + V3 rotational-vibrational band of acetylene ^^CtHi are certified for this SRM. Fifteen lines are certified with an uncertainty of 0.1 pm, two lines are certified with an uncertainty of 0.6 pm, and the remainder of the lines are certified with an uncertainty of 0.3 pm.
