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Photonics operators

5 operators in the photonics category of the live registry. Each is a named formula you can compose inside a state contract or call directly through POST /api/zeq/compute. KO42 is always on; add up to three more per call (total ≤ 4), per the 7-step protocol.

OperatorDescriptionEquation
PHOT_BRAGGFiber Bragg grating reflection wavelength determined by the grating period and effective refractive index.\lambda_B = 2 n_{\text{eff}} \Lambda
PHOT_COUPLED_MODECoupled mode theory describing energy transfer between two evanescently coupled optical waveguides.i \frac{dA_1}{dz} = \kappa A_2 e^{i \Delta\beta z}, \quad i \frac{dA_2}{dz} = \kappa^* A_1 e^{-i \Delta\beta z}
PHOT_GAIN_THRESHOLDLaser gain threshold condition balancing cavity losses with stimulated emission gain per round trip.g_{\text{th}} = \frac{1}{\Gamma} \left(\alpha_i + \frac{1}{2L} \ln \frac{1}{R_1 R_2}\right)
PHOT_KERROptical Kerr effect giving the intensity-dependent refractive index in nonlinear photonic media.n(I) = n_0 + n_2 |E|^2
PHOT_WAVEGUIDEWaveguide dispersion relation for the propagation constant in a dielectric slab or fiber waveguide.\beta(\omega) = \frac{n_{\text{eff}}(\omega) \cdot \omega}{c}

Compute with one of these​

curl -sS -X POST https://zeqsdk.com/api/zeq/compute \
  -H "Authorization: Bearer $ZEQ_KEY" \
  -H "Content-Type: application/json" \
  -d '{"operators":["PHOT_BRAGG"],"inputs":{}}'

The response carries the bare physics value, its unit and uncertainty, the generated master equation, and a signed envelope you can verify on any node.

See also​