{"id":"W4312890570","doi":"10.1364/bgppm.2022.bth2a.5","title":"Dual-wavelength differential detection of tilted fiber Bragg gratings for ppb-level measurement of dissolved ammonia","year":2022,"lang":"en","type":"article","venue":"Optica Advanced Photonics Congress 2022","topic":"Advanced Fiber Optic Sensors","field":"Engineering","cited_by":1,"is_retracted":false,"has_abstract":true,"ca_institutions":"Carleton University","funders":"","keywords":"Fiber Bragg grating; Materials science; Wavelength; Detection limit; Optics; Ammonia; Differential (mechanical device); Optical fiber; Optoelectronics; PHOSFOS; Fiber; Fiber optic sensor; Dispersion-shifted fiber; Chemistry; Chromatography; Physics","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow"],"consensus_categories":[],"category_scores_codex":[0.0002653413,0.0003774972,0.0006309522,0.0001833052,0.0002078083,0.00001484314,0.0002948212,0.00009208792,0.0003073934],"category_scores_gemma":[0.0002108208,0.000439423,0.0002322342,0.0004060612,0.0001066757,0.0001554626,0.0001744724,0.0004263908,0.000002237811],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0003826637,"about_ca_system_score_gemma":0.00005889781,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.000009442002,"about_ca_topic_score_gemma":0.00003479044,"domain_scores_codex":[0.9973112,0.00005604071,0.0008073092,0.0004628531,0.0008401395,0.0005224855],"domain_scores_gemma":[0.9983194,0.000248788,0.0003449838,0.0006034876,0.0003650275,0.0001182919],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.0004050003,0.0001526511,0.00001085372,0.0002471971,0.0002330011,0.000004707275,0.000292197,0.1114541,0.8701448,0.0002892425,0.0000354642,0.01673076],"study_design_scores_gemma":[0.002618338,0.0004027035,0.0001714798,0.00005626484,0.0001360645,0.00001078682,0.0003657866,0.2627371,0.7279761,0.0002852952,0.00473286,0.0005072517],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9757168,0.0004329462,0.01843099,0.00002139845,0.002057461,0.001599765,0.001128171,0.0002177066,0.0003947074],"genre_scores_gemma":[0.9636833,0.00007181468,0.03491607,0.000007745823,0.00002136591,0.0006780713,0.00008369214,0.0001428123,0.0003951121],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.151283,"threshold_uncertainty_score":0.9998057,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01883308881670693,"score_gpt":0.2297324253869444,"score_spread":0.2108993365702374,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}