688nm narrow bandpass filter
Item#:NBPF688/10
Price:$100
CWL:688nm
Type: narrow bandpass filter
FWHM:10nm
Specifications:
Substrate material: Float glass
Dimension: Ø12.5x6(mounted),Custom
Angle of incidence: 0
Center wavelength: 688nm(+2/-2nm)
Full width at half maximum: 10nm(+2/-2nm)
Min. transmission: >50% @ 688nm,cut-off from 200nm to 1100nm(typical),T<0.01%
Min. clear aperture: >85% of diameter
Note: Other dimension and specification are available upon request.
Knowledge & Tips
Mega-9 Optical supplies advanced narrow bandpass filter with high quality and fast delivery.
An optical filter, including a pair of Bragg grating units optically coupled to respective ports of a circulator, is provided for filtering a selected wavelength band of light from a DWDM input light. Each grating unit includes a respective tunable optical element, which have a reflective element, such as a Bragg grating. Generally, one grating unit filters a selected wavelength band of light and reflects the selected wavelength band to the other grating unit, which reflects a portion of the reflected wavelength band to an output of the optical filter. This double reflection of the selected wavelength band provides an optical filter having an effective filter function that is equal to the product of the individual filter functions of the grating units. To create a desired effective filter function, the gratings may be written to have different filter functions or grating profiles. One or both of the grating units may also be tunable to selectively create, tailor, shape or change the effective filter function of the optical filter in response to a control signal by offsetting the reflection wavelengths of the gratings, having different grating profiles.16. The optical filter of claim 1, wherein at least one of the first and second optical elements have an outer cladding and an inner core disposed therein, wherein the at least one of the first and second reflective element comprises a grating disposed in a longitudinal direction of the inner core. 17. The optical filter of claim 16, wherein the at least one of the first and second optical elements comprises: an optical fiber, having a reflective element written therein; and a tube, having the optical fiber and the reflective element encased therein along a longitudinal axis of the tube, the tube being fused to at least a portion of the fiber. 18. The optical filter of claim 16, wherein the at least one of the first and second optical elements is an optical waveguide having an outer transverse dimension of at least 0.3 mm. 19. The optical filter of claim 16, wherein the at least one of the first and second optical elements is an optical fiber. 20. The optical filter of claim 1 further includes a straining device for tensioning axially the first optical element to tune the first reflective element, wherein the first reflective element is disposed along an axial direction of the first optical element.
Mega-9 Optical supplies advanced 688nm narrow bandpass filter,high quality,fast delivery,tel:86-21-57784688,Mega-9 Optical custom-designs and produces high performance optical filters and coatings in large volumes or single-piece quantities for all requirements of spectral light measurement and control.. 688nm narrow bandpass filter, optical filters, fluorescence filter sets, astronomy, custom, interference, photolithography, spectroscopy, microscopy, flow cytometry, uv-ir filters, custom coatings, rejection band, curvomatic, e-commerce, analytical, raman, color enhancement, narrowband, longpass, shortpass, laser line, neutral density, thin film coatings, oem services
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CWL:>>300~400|400~500|500~600|600~700|700~800|800~900|900~1000|1000~1100
