HDFA Window Margin

Check a wavelength against caller-supplied holmium-fiber amplifier window bounds.

Description

Amplifier-window screening compares an operating wavelength with supplied lower and upper bounds.

Amplifier-window screening compares an operating wavelength with supplied lower and upper bounds. Both edge margins retain signs.^[1]

Check a wavelength against caller-supplied holmium-fiber amplifier window bounds.

When to use HDFA Window Margin

Use this tool to check a wavelength against caller-supplied holmium-fiber amplifier window bounds.

Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.

How to use HDFA Window Margin and understand its results

Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.
Enter operatingWavelengthNanometers, windowMinimumNanometers, windowMaximumNanometers using the field table and calculation rules, then run the tool.
Read lowerMarginNanometers, upperMarginNanometers, withinWindow. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
operatingWavelengthNanometers	Operating wavelength (nm)	number	Required
windowMinimumNanometers	HDFA window minimum (nm)	number	Required
windowMaximumNanometers	HDFA window maximum (nm)	number	Required

Enter finite wavelengths with minimum≤maximum. Return both margins and inclusive window flag. Equal bounds admit only their shared value.

lowerMargin=operating−minimum; upperMargin=maximum−operating

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
lowerMarginNanometers	Lower-edge margin (nm)	number
upperMarginNanometers	Upper-edge margin (nm)	number
withinWindow	Within HDFA window	boolean

json

{
  "input": {
    "operatingWavelengthNanometers": 2000,
    "windowMinimumNanometers": 1900,
    "windowMaximumNanometers": 2100
  },
  "output": {
    "lowerMarginNanometers": 100,
    "upperMarginNanometers": 100,
    "withinWindow": true
  }
}

Limitations and assumptions

No built-in holmium gain window, positivity check or amplification strength is supplied.

Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors. A successfully returned false flag is an evaluated outcome; its meaning is explained above.

Alternative or Complementary methods

Use Fluoride-Fiber Window Margin: Compare a thulium-fluoride operating wavelength with caller-supplied transmission-window bounds. For a complementary task, use TDFA Band Overlap: Calculate overlap between TDFA gain and a requested signal band.

References

HDFA Window Margin — tool.io

Similar or alternative tools

Fluoride-Fiber Window Margin
Compare a thulium-fluoride operating wavelength with caller-supplied transmission-window bounds.
TDFA Band Overlap
Calculate overlap between TDFA gain and a requested signal band.