Issues

• Make sax_component and photonic models use power-wave stamps without S-to-Y inversion

  gdsfactory/circulax#112 · Filter by author cdaunt opened on Nov 7, 2026
  

• Replace dense harmonic-balance Newton solve: bottleneck for Nyquist OMA/ER metrics

  gdsfactory/circulax#105 · Filter by author cdaunt opened on Nov 5, 2026

• netlists extra pins netlist-parser by git URL, blocking a usable PyPI release of netlist_io (v0.2.5)

  gdsfactory/circulax#92 · Filter by author cdaunt opened on Oct 16, 2026

• Default persistent JAX compilation cache at import for standalone users

  gdsfactory/circulax#87 · Filter by author cdaunt opened on Oct 13, 2026
  1

• WaveformVoltageSource is the costliest component to build at import (~0.5 s, ~30 XLA compiles); propose cheaper construction

  enhancement
  gdsfactory/circulax#86 · Filter by author cdaunt opened on Oct 13, 2026
  1

• Linear-optics fast path for DC sweeps: one Newton step + residual check with fallback

  gdsfactory/circulax#85 · Filter by author cdaunt opened on Oct 13, 2026

• Circulax-owned DC sweep with continuation and chunking (dc_sweep)

  gdsfactory/circulax#84 · Filter by author cdaunt opened on Oct 13, 2026

• Reuse the compiled DC solve: Circuit.dc/dc_checked re-trace and recompile on every call

  gdsfactory/circulax#83 · Filter by author cdaunt opened on Oct 13, 2026
  1

• Reject missing SAX defaults and validate model contracts

  gdsfactory/circulax#82 · Filter by author vvahidd opened on Oct 9, 2026

• Add source-driven small-signal AC response distinct from S-parameters

  enhancement
  gdsfactory/circulax#80 · Filter by author cdaunt opened on Oct 9, 2026

• Add coupled-inductor and transformer primitives for schematic simulation

  gdsfactory/circulax#76 · Filter by author cdaunt opened on Oct 8, 2026

• Define schematic bindings for existing electrical builtins, starting with Inductor

  gdsfactory/circulax#75 · Filter by author cdaunt opened on Oct 8, 2026

• Built-in device level/type → VA module identity mapping (GF180 BSIM4, IHP VBIC)

  gdsfactory/circulax#70 · Filter by author cdaunt opened on Oct 5, 2026

• Finish IHP parity benchmark: native ngspice decks + ngspice/VACASK reference switch

  gdsfactory/circulax#69 · Filter by author cdaunt opened on Oct 5, 2026

• Native resistor/capacitor/diode components with full SPICE parameter fidelity

  gdsfactory/circulax#68 · Filter by author cdaunt opened on Oct 5, 2026

• Potential/flow (discipline) metadata for states: real GMIN homotopy, per-unknown limiting and tolerances

  gdsfactory/circulax#67 · Filter by author cdaunt opened on Oct 2, 2026

• OSDI devices: .hb() needs a JVP on OsdiResidualEvalHandleCpu, .sp() hits a has_delay regression

  gdsfactory/circulax#65 · Filter by author cdaunt opened on Oct 1, 2026
  2

• Scope: run IHP SG13G2 Verilog-A/OSDI compact models as Circulax components

  gdsfactory/circulax#63 · Filter by author jackgdsf opened on Oct 1, 2026

• fit_model: supplied port delays silently corrupt S11 on reflective two-ports

  gdsfactory/circulax#62 · Filter by author cdaunt opened on Sep 30, 2026

• NaN in optx.least_squares/GaussNewton through circuit.dc() for nonlinear multi-iteration components

  gdsfactory/circulax#61 · Filter by author cdaunt opened on Sep 29, 2026

• Feature request: component-level solve_dc() for local DC operating-point solves

  gdsfactory/circulax#58 · Filter by author cdaunt opened on Sep 20, 2026

• Extend inferred delay beyond low-reflection reciprocal two-ports

  gdsfactory/circulax#56 · Filter by author cdaunt opened on Sep 20, 2026

• Dispatch S-parameter evaluation to SAX when every model in the netlist is a SAX model

  gdsfactory/circulax#54 · Filter by author jackgdsf opened on Sep 19, 2026

• add sample OMA for MZI modulator and TDECQ parameters from sims

  gdsfactory/circulax#22 · Filter by author joamatab opened on Jun 18, 2026
  1

• Support advanced modulation formats: QPSK, 16QAM, DP-QPSK eye diagrams and constellation plots

  gdsfactory/circulax#21 · Filter by author jackgdsf opened on Jun 8, 2026
  1