Semiconductor Silicon Photonics Grating Coupler Efficiency Calculator

Audit actual grating-coupled power with independently established remaining path transmission; >1 correction signals mismatch not clipped, distinct from generic optical efficiency.

Description

Measured grating coupling includes the remaining optical path’s transmission.

Measured grating coupling includes the remaining optical path’s transmission.1

Reporting raw and path-corrected ratios makes that independent correction visible.

When to use Semiconductor Silicon Photonics Grating Coupler Efficiency Calculator

Use this tool when you need to reproduce the stated calculation from measured records or independently selected model inputs. Prepare measured device or specimen records under independently matched branch, temperature, frame, and unit conventions.

How to use Semiconductor Silicon Photonics Grating Coupler Efficiency Calculator and understand its results

  1. Prepare measured device or specimen records under independently matched branch, temperature, frame, and unit conventions.
  2. Enter observedCoupledOpticalWatts, observedIncidentOpticalWatts, callerMatchedPathTransmissionFractions, following the field table and rules below, then run the tool.
  3. Read pathCorrectedGratingCouplingFractions, rawObservedCouplingFractions. Use the output meanings below to interpret units, signs, flags, and any nested result fields.
  4. Correct reported input issues and run again. For a successful result, check the stated evidence coverage and assumptions before using it in your review.
Input fieldMeaningValue typeRequirement
observedCoupledOpticalWattsObserved coupled optical wattslist of numberRequired
observedIncidentOpticalWattsObserved incident optical wattslist of numberRequired
callerMatchedPathTransmissionFractionsCaller matched path transmission fractionslist of numberRequired

Use aligned nonempty nonnegative coupled powers, positive incident powers, and path transmission fractions in (0,1]. Return coupled/incident and divide again by path transmission. Corrected values above one are retained for review rather than clipped or rejected.

raw_i=Pcoupled_i/Pincident_i; corrected_i=raw_i/pathTransmission_i

Symbols follow the input and output meanings and the calculation rules above.

Output fieldMeaningValue type
pathCorrectedGratingCouplingFractionsPath corrected grating coupling fractionslist of number
rawObservedCouplingFractionsRaw observed coupling fractionslist of number
json
{
  "input": {
    "observedCoupledOpticalWatts": [
      1,
      2
    ],
    "observedIncidentOpticalWatts": [
      2,
      4
    ],
    "callerMatchedPathTransmissionFractions": [
      0.5,
      0.5
    ]
  },
  "output": {
    "pathCorrectedGratingCouplingFractions": [
      1,
      1
    ],
    "rawObservedCouplingFractions": [
      0.5,
      0.5
    ]
  }
}

Limitations and assumptions

Matched measurement branch, material state, calibration, and conventions must be independently established. Results do not certify device performance or operating conditions.

Missing required fields, unknown fields, wrong types, and violated calculation rules are input issues. Numeric values must be finite; nonfinite results are rejected. Evidence arrays must be dense, with no missing cells. Numeric observation lists allow at most 10,000 entries, subject to any smaller bounds stated above.

Alternative or Complementary methods

For a related review, use Semiconductor Silicon Photonics Grating Coupler Efficiency Vs Angle Calculator: Grating-coupler angle response belongs to matched wavelength and measurement conditions. This tool interpolates that observed response without choosing an optimum angle. For a complementary step, use Semiconductor Silicon Photonics Waveguide Bending Loss Calculator: Excess bend loss compares a bent guide with a matched straight reference. Dividing the logarithmic power difference by the observed bend count yields a per-bend observation.

References

  1. Semiconductor Silicon Photonics Grating Coupler Efficiency Calculator — tool.io

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