방사광 X선 극저온 실리콘 포토닉스 마이크로링 소산 솔리톤(Dissipative Soliton) 광주파수 빗 서보 C# SIMD 엔진

3. C# .NET 9.0 Zero-Allocation 100,000Hz 솔리톤 빗 주파수 록킹 서보 엔진

하드웨어 인터럽트 수준의 100kHz 주기로 광검출기(PD) 투과 파워와 비팅 노이즈 신호를 분석하여 펌프 레이저 압전 튜너(PZT) 및 전광 변조기 전압을 연산합니다.

using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;

namespace ZeliDesk.Quantum.Photonics
{
    /// <summary>
    /// 마이크로링 공진기 출력 모니터링 원격 측정 데이터 (100kHz 샘플링)
    /// </summary>
    [StructLayout(LayoutKind.Sequential, Pack = 4)]
    public readonly struct SolitonMonitorTelemetry
    {
        public readonly float TimestampUs;
        public readonly float TransmittedOpticalPowerMw;
        public readonly float RadioFrequencyNoisePowerDbm;
        public readonly float CavityCryoTemperatureK;
        public readonly float CurrentLaserDetuningGhz;

        public SolitonMonitorTelemetry(
            float timeUs, float optPower, float rfNoise, float tempK, float detuning)
        {
            TimestampUs = timeUs;
            TransmittedOpticalPowerMw = optPower;
            RadioFrequencyNoisePowerDbm = rfNoise;
            CavityCryoTemperatureK = tempK;
            CurrentLaserDetuningGhz = detuning;
        }
    }

    /// <summary>
    /// 100kHz 고속 LLE 소산 솔리톤 상태 추적 및 레이저 디튜닝 폐루프 서보 엔진
    /// </summary>
    public sealed class DissipativeSolitonCombServoEngine
    {
        private const float SolitonStepPowerTargetMw = 4.25f;
        private const float LowRfNoiseThresholdDbm = -75.0f; // 솔리톤 진입 시 RF 노이즈 급감
        private const float DetuningGainKp = 0.082f;
        private const float DetuningGainKi = 0.0065f;

        private float _accumulatedPowerError;
        private bool _isSolitonLocked;

        public DissipativeSolitonCombServoEngine()
        {
            _accumulatedPowerError = 0.0f;
            _isSolitonLocked = false;
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
        public void ComputeDetuningServo(
            in SolitonMonitorTelemetry telemetry,
            out bool isSolitonStable,
            out float commandedPztTuningGhz,
            out float commandedThermalHeaterVolts)
        {
            float pwr = telemetry.TransmittedOpticalPowerMw;
            float rfNoise = telemetry.RadioFrequencyNoisePowerDbm;

            // 1. DKS(소산 커 솔리톤) 상태 진입 판정 (저잡음 고정 스텝)
            bool isRfQuiet = rfNoise < LowRfNoiseThresholdDbm;
            bool isPowerOnStep = MathF.Abs(pwr - SolitonStepPowerTargetMw) < 0.35f;
            _isSolitonLocked = isRfQuiet && isPowerOnStep;
            isSolitonStable = _isSolitonLocked;

            // 2. 파워 에러 기반 디튜닝 PI 보정 (100kHz)
            float powerError = pwr - SolitonStepPowerTargetMw;
            _accumulatedPowerError += powerError;

            float deltaDetuning = (DetuningGainKp * powerError) + (DetuningGainKi * _accumulatedPowerError);
            float targetDetuning = telemetry.CurrentLaserDetuningGhz + deltaDetuning;

            // 디튜닝 범위 제어 (-5.0 GHz ~ +12.0 GHz)
            commandedPztTuningGhz = Math.Clamp(targetDetuning, -5.0f, 12.0f);

            // 3. 극저온 열 드리프트 마이크로 히터 전압 보상
            float tempDrift = telemetry.CavityCryoTemperatureK - 4.2f;
            float heaterV = 1.2f - (tempDrift * 0.45f);
            commandedThermalHeaterVolts = Math.Clamp(heaterV, 0.0f, 3.3f);
        }
    }
}