{"text_format":"1","workbook":"xlsx","n_sheets":4,"sheets":["Div Angle, Max Waist","Diameter Through Collimator","Beam Diameter Distance","Fiber Coupling Eff"],"not_rendered":{"charts":0,"images":1,"macros":1,"external_links":0,"defined_names":1,"comments":0,"pivot_tables":0},"unopened":[],"bounds":{"document_bytes":16777216,"sheet_cells":100000,"rows_first":2000,"rows_last":500,"rows_between":2000,"halvings":0,"cell_chars":16384,"cell_head_chars":4096},"cells_cut":0,"cells_raw":0,"read":"whole","date_system":"1900"}

{"sheet":"Div Angle, Max Waist","index":0,"n_rows":17,"n_cols":13,"rows_kept":17,"cut":false,"hidden":false,"merged":[[0,2,0,10],[2,2,2,3],[2,6,2,7],[3,0,8,0],[2,12,5,16]]}
[null,null,"Full Divergence Angle and Maximum Waist Distance"]
[]
[null,null,"Full Divergence Angle",null,null,null,"Maximum Waist Distance",null,null,null,"Equation for Full Divergence Angle (in degrees)",null,"Note: It is recommended to download and open this file in the Excel desktop application, as some features are not supported in the web version of Excel. "]
["This calculator can be used to theoretically approximate the full divergence angle and maximum waist distance of a beam. These equations assume a Gaussian input beam and are therefore only applicable for single mode fibers. Using these calculations for multimode fibers will yield underestimated values.",null,"Mode Field Diameter (µm)",3.5,null,null,"Mode Field Diameter (µm)",3.5]
[null,null,"Focal Length (mm)",4,null,null,"Focal Length (mm)",4]
[null,null,null,null,null,null,"Wavelength (nm)",850]
[null,null,"Full Divergence Angle  (°)",{"$f":"(D4/1000)/D5*(180/PI())","v":5.0133807073947032E-2},null,null,null,null,null,null,"Equation for Maximum Waist Distance"]
[null,null,"Full Divergence Angle (mrad)",{"$f":"D4/D5","v":0.875},null,null,"Maximum Waist Distance (mm)",{"$f":"H5+(2*H5^2*(H6/1000000))/(PI()*(H4/1000)^2)","v":710.77786973053912}]
[]
[]
["Inputs (Can Be Changed)",null,null,null,null,null,null,null,null,null,"Parameters"]
["Outputs (Cannot Be Changed)",null,null,null,null,null,null,null,null,null,"θ = Full Divergence Angle"]
[null,null,null,null,null,null,null,null,null,null,"MFD = Mode Field Diameter"]
[null,null,null,null,null,null,null,null,null,null,"f = Focal Length"]
[null,null,null,null,null,null,null,null,null,null,"λ = Wavelength"]
[null,null,null,null,null,null,null,null,null,null,"zmax = Maximum Waist Distance"]
[null,null,null,null,null,null,null,null,null,null,"λ = Wavelength"]

{"sheet":"Diameter Through Collimator","index":1,"n_rows":15,"n_cols":13,"rows_kept":15,"cut":false,"hidden":false,"merged":[[3,0,7,0],[6,10,8,10],[2,12,5,16],[0,2,0,10],[2,2,2,3],[2,6,2,7],[2,10,4,10]]}
[null,null,"Beam Diameter from Fiber Collimator"]
[]
[null,null,"Beam Diameter",null,null,null,"Collimator Focal Length",null,null,null,"Equation for Beam Diameter",null,"Note: It is recommended to download and open this file in the Excel desktop application, as some features are not supported in the web version of Excel. "]
["This calculator can be used to theoretically approximate the diameter of a beam through a fiber collimator.  These equations assume a Gaussian input beam and are therefore only applicable for single mode fibers. The values for multimode fibers will be underestimated.",null,"Collimator Focal Length (mm)",11,null,null,"Beam Diameter (mm)",12.7]
[null,null,"Mode Field Diameter (µm)",6,null,null,"Mode Field Diameter (µm)",4.5]
[null,null,"Wavelength (nm)",640,null,null,"Wavelength (nm)",633]
[null,null,null,null,null,null,null,null,null,null,"Equation for Focal Length"]
[null,null,"Beam Diameter (mm)",{"$f":"(4*D4*(D6/1000))/(D5*PI())","v":1.4939343991559242},null,null,"Focal Length (mm)",{"$f":"H4*H5*PI()/(4*(H6/1000))","v":70.909170676404685}]
[]
["Inputs (Can Be Changed)"]
["Outputs (Cannot Be Changed)",null,null,null,null,null,null,null,null,null,"Parameters"]
[null,null,null,null,null,null,null,null,null,null,"d = Beam Diameter"]
[null,null,null,null,null,null,null,null,null,null,"λ = Wavelength"]
[null,null,null,null,null,null,null,null,null,null,"f = Collimator Focal Length"]
[null,null,null,null,null,null,null,null,null,null,"MFD = Mode Field Diameter"]

{"sheet":"Beam Diameter Distance","index":2,"n_rows":11,"n_cols":9,"rows_kept":11,"cut":false,"hidden":false,"merged":[[2,2,2,3],[0,2,0,6],[3,0,5,0],[2,8,5,12]]}
[null,null,"Beam Diameter at a Certain Distance"]
[]
[null,null,"Beam Diameter at a Certain Distance",null,null,null,"Equation for Beam Diameter",null,"Note: It is recommended to download and open this file in the Excel desktop application, as some features are not supported in the web version of Excel. "]
["This calculator can be used to calculate the diameter of a beam at a certain distance away. The equation assumes a Gaussian input beam.",null,"Initial Beam Diameter (mm)",4]
[null,null,"Full Divergence Angle (°)",0.3]
[null,null,"Distance (m)",5]
[null,null,null,null,null,null,"Parameters"]
["Inputs (Can Be Changed)",null,"Final Beam Diameter (mm)",{"$f":"D4+(2*D6*TAN(D5/2))","v":5.5113521805829508},null,null,"d1 = Initial Beam Diameter"]
["Outputs (Cannot Be Changed)",null,null,null,null,null,"d2 = Final Beam Diameter"]
[null,null,null,null,null,null,"z = Distance"]
[null,null,null,null,null,null,"θ = Full Divergence Angle"]

{"sheet":"Fiber Coupling Eff","index":3,"n_rows":16,"n_cols":15,"rows_kept":16,"cut":false,"hidden":false,"merged":[[2,14,5,18],[3,0,6,0],[0,2,0,12],[2,2,2,3],[2,6,2,7],[2,10,4,12],[6,10,8,12]]}
[null,null,"Fiber Coupling Efficiency (from MFD mismatch)"]
[]
[null,null,"Coupling Efficiency for Round Beams",null,null,null,"Coupling Efficiency for Elliptical Beams",null,null,null,"Equation for Round Beam Fiber Coupling Efficiency",null,null,null,"Note: It is recommended to download and open this file in the Excel desktop application, as some features are not supported in the web version of Excel. "]
["This calculator can be used to calculate the fiber coupling efficiency from MFD mismatch for round or elliptical beams. These equations assume a Gaussian input beam.",null,"Spot Diameter (µm)",24.83,null,null,"Spot Diameter, x Direction (µm)",1.7]
[null,null,"Mode Field Diameter (µm)",4.5,null,null,"Spot Diameter, y Direction (µm)",4]
[null,null,null,null,null,null,"Mode Field Diameter (µm)",3]
[null,null,"Efficiency (%)",{"$f":"100*(4*D5^2*D4^2)/(D5^2+D4^2)^2","v":12.315757506754267},null,null,null,null,null,null,"Equation for Elliptical Beam Fiber Coupling Efficiency"]
[null,null,null,null,null,null,"Efficiency (%)",{"$f":"100*(4*H4*H5*H6^2)/((H6^2+H4^2)*(H6^2+H5^2))","v":82.354920100925142}]
["Inputs (Can Be Changed)"]
["Outputs (Cannot Be Changed)"]
[null,null,null,null,null,null,null,null,null,null,"Parameters"]
[null,null,null,null,null,null,null,null,null,null,"η = Efficiency"]
[null,null,null,null,null,null,null,null,null,null,"d = Focused Spot Diameter"]
[null,null,null,null,null,null,null,null,null,null,"MFD = Fiber Mode Field Diameter"]
[null,null,null,null,null,null,null,null,null,null,"dx = Spot Diameter, x Direction"]
[null,null,null,null,null,null,null,null,null,null,"dy = Spot Diameter, y Direction"]