Semiconductor Grating Coupler Bandwidth Calculator
Actual independently identified grating-coupler contiguous half-maximum spectral interval width, not numerical peak finding, guaranteed passband or arbitrary throughput limits.
Description
A half-maximum bandwidth uses independently identified lower and upper wavelength boundaries.
A half-maximum bandwidth uses independently identified lower and upper wavelength boundaries.1
It differs from detecting peaks or crossings in a complete optical spectrum.
When to use Semiconductor Grating Coupler Bandwidth Calculator
Use this tool to obtain observedHalfMaximumBandwidthNm from the supplied records using the stated calculation. Establish the device or material, operating point, units and independently applicable measurement or model calibration.
How to use Semiconductor Grating Coupler Bandwidth Calculator and understand its results
- Establish the device or material, operating point, units and independently applicable measurement or model calibration.
- Enter actualIndependentlyIdentifiedHalfMaximumWavelengthsNm, using the field meanings and rules below, then run the tool.
- Read result.observedHalfMaximumBandwidthNm. Use the units and sign conventions below, and review any unknown records separately.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualIndependentlyIdentifiedHalfMaximumWavelengthsNm | Actual independently identified half maximum wavelengths nm | list of number | Required |
Require exactly two independently identified wavelength boundaries in nanometres. The lower boundary must be positive and the upper no smaller, allowing a zero width. Subtract lower from upper. No spectrum analysis or automated half-maximum crossing search is performed.
bandwidthNm=upperWavelengthNm−lowerWavelengthNm Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Qualified observed calculation or explicit reference | object |
| result.observedHalfMaximumBandwidthNm | Qualified upper-minus-lower half-maximum wavelength boundary, in nanometres. | number |
{
"input": {
"actualIndependentlyIdentifiedHalfMaximumWavelengthsNm": [
1500,
1540
]
},
"output": {
"result": {
"observedHalfMaximumBandwidthNm": 40
}
}
}Limitations and assumptions
Device structure, material state, operating conditions and calibration determine applicability. The result does not infer missing physical parameters, verify a transport mechanism or validate a fabricated device model.
Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Lists and matrices must be dense, without missing cells. Numeric lists allow at most 10000 entries, subject to the narrower lengths and code rules above. Extremely large composite outputs are rejected.
Alternative or Complementary methods
For a related step, use Semiconductor Echelle Grating Diffraction Efficiency Calculator: Diffraction efficiency compares power assigned to a declared echelle order with matched incident power. For a complementary comparison, use Semiconductor Distributed Feedback Laser Coupling Coefficient Calculator: A distributed-feedback coupling coefficient belongs to a defined grating and optical mode.
References
Similar or alternative tools
- Semiconductor Echelle Grating Diffraction Efficiency Calculator
Diffraction efficiency compares power assigned to a declared echelle order with matched incident power.
- Semiconductor Distributed Feedback Laser Coupling Coefficient Calculator
A distributed-feedback coupling coefficient belongs to a defined grating and optical mode.