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Photonics operators

5 operators in the photonics category of the live registry. Compose them in a contract or call POST /api/zeq/compute — KO42 is always on, plus up to three more per call.

How it computes: dedicated closed-form solver solvePHOT — real equations over CODATA-2018 constants; where an operator needs a series/matrix/field a scalar cannot express, it refuses honestly. See the solvers.

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 one — a real call​

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":{"n_eff":1.5,"Lambda":5e-7}}'

Returns 1.5e-6 m — with unit, uncertainty, the generated master equation, and a signed envelope you can verify.

See also​