{"id":"https://openalex.org/W7150875271","doi":"https://doi.org/10.1364/opticaopen.31937424","title":"Optical Equalization for Reduction of Fixed-Point DSP Word Length","display_name":"Optical Equalization for Reduction of Fixed-Point DSP Word Length","publication_year":2026,"publication_date":"2026-04-06","ids":{"openalex":"https://openalex.org/W7150875271","doi":"https://doi.org/10.1364/opticaopen.31937424"},"language":"en","primary_location":{"id":"doi:10.1364/opticaopen.31937424","doi":"https://doi.org/10.1364/opticaopen.31937424","is_oa":true,"landing_page_url":"https://doi.org/10.1364/opticaopen.31937424","pdf_url":null,"source":null,"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":"Optica Open","raw_type":"posted-content"},"volume":null,"type":"preprint","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://doi.org/10.1364/opticaopen.31937424","any_repository_has_fulltext":null},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5133013891","display_name":"Parthiv Nair","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Parthiv Nair","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5133041798","display_name":"Pranav Singamsetty","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Pranav Singamsetty","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101982186","display_name":"Huy Thong Nguyen","orcid":"https://orcid.org/0000-0002-1748-7703","observed_orcids":["https://orcid.org/0000-0002-1748-7703"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Huy Nguyen","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5133062747","display_name":"Ryan Morokutti","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Ryan Morokutti","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5064828254","display_name":"Callen MacPhee","orcid":"https://orcid.org/0009-0000-2761-7148","observed_orcids":["https://orcid.org/0009-0000-2761-7148"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Callen MacPhee","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5057807483","display_name":"Bahram Jalali","orcid":"https://orcid.org/0000-0002-0169-8231","observed_orcids":["https://orcid.org/0000-0002-0169-8231"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Bahram Jalali","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10767","display_name":"Advanced Photonic Communication Systems","score":0.7753999829292297,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10767","display_name":"Advanced Photonic Communication Systems","score":0.7753999829292297,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12153","display_name":"Advanced Optical Sensing Technologies","score":0.0575999990105629,"subfield":{"id":"https://openalex.org/subfields/3105","display_name":"Instrumentation"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12611","display_name":"Neural Networks and Reservoir Computing","score":0.04360000044107437,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/optical-equalization","display_name":"optical equalization","score":0.8849999904632568},{"id":"https://openalex.org/keywords/spectral-phase-modulation","display_name":"spectral phase modulation","score":0.7739999890327454},{"id":"https://openalex.org/keywords/coherent-detection","display_name":"coherent detection","score":0.8669999837875366},{"id":"https://openalex.org/keywords/lidar-signal-processing","display_name":"lidar signal processing","score":0.6209999918937683},{"id":"https://openalex.org/keywords/physical-computing","display_name":"physical computing","score":0.5460000038146973}],"concepts":[{"id":"https://openalex.org/C96834759","wikidata":"https://www.wikidata.org/wiki/Q750463","display_name":"Phase modulation","level":3,"score":0.5335000157356262},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.48570001125335693},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4832000136375427},{"id":"https://openalex.org/C75755367","wikidata":"https://www.wikidata.org/wiki/Q104531076","display_name":"Equalization (audio)","level":3,"score":0.4269999861717224},{"id":"https://openalex.org/C145995521","wikidata":"https://www.wikidata.org/wiki/Q639897","display_name":"Pulse compression","level":3,"score":0.424699991941452},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.41659998893737793},{"id":"https://openalex.org/C44280652","wikidata":"https://www.wikidata.org/wiki/Q104837","display_name":"Phase (matter)","level":2,"score":0.4129999876022339},{"id":"https://openalex.org/C197424946","wikidata":"https://www.wikidata.org/wiki/Q1165717","display_name":"Waveform","level":3,"score":0.3993000090122223},{"id":"https://openalex.org/C123079801","wikidata":"https://www.wikidata.org/wiki/Q750240","display_name":"Modulation (music)","level":2,"score":0.3928000032901764},{"id":"https://openalex.org/C20788544","wikidata":"https://www.wikidata.org/wiki/Q467054","display_name":"Photonics","level":2,"score":0.38769999146461487},{"id":"https://openalex.org/C102755159","wikidata":"https://www.wikidata.org/wiki/Q7259683","display_name":"Pulse shaping","level":3,"score":0.38589999079704285},{"id":"https://openalex.org/C195251586","wikidata":"https://www.wikidata.org/wiki/Q1185939","display_name":"Demodulation","level":3,"score":0.37459999322891235},{"id":"https://openalex.org/C149810388","wikidata":"https://www.wikidata.org/wiki/Q5374873","display_name":"Emulation","level":2,"score":0.3709000051021576},{"id":"https://openalex.org/C87133666","wikidata":"https://www.wikidata.org/wiki/Q1161699","display_name":"Dynamic range","level":2,"score":0.3691999912261963},{"id":"https://openalex.org/C104267543","wikidata":"https://www.wikidata.org/wiki/Q208163","display_name":"Signal processing","level":3,"score":0.3691999912261963},{"id":"https://openalex.org/C42207441","wikidata":"https://www.wikidata.org/wiki/Q1758065","display_name":"Liquid crystal on silicon","level":3,"score":0.3643999993801117},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.35429999232292175},{"id":"https://openalex.org/C73000952","wikidata":"https://www.wikidata.org/wiki/Q17007827","display_name":"Discretization","level":2,"score":0.3474999964237213},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3434000015258789},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.3386000096797943},{"id":"https://openalex.org/C89631360","wikidata":"https://www.wikidata.org/wiki/Q1428766","display_name":"Phase noise","level":2,"score":0.33160001039505005},{"id":"https://openalex.org/C34736171","wikidata":"https://www.wikidata.org/wiki/Q918333","display_name":"Preprocessor","level":2,"score":0.32580000162124634},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.3237000107765198},{"id":"https://openalex.org/C2776015930","wikidata":"https://www.wikidata.org/wiki/Q1454132","display_name":"Free spectral range","level":3,"score":0.31060001254081726},{"id":"https://openalex.org/C160633673","wikidata":"https://www.wikidata.org/wiki/Q355198","display_name":"Pixel","level":2,"score":0.3050000071525574},{"id":"https://openalex.org/C11930861","wikidata":"https://www.wikidata.org/wiki/Q181417","display_name":"Frequency modulation","level":3,"score":0.29179999232292175},{"id":"https://openalex.org/C158622935","wikidata":"https://www.wikidata.org/wiki/Q660848","display_name":"Nonlinear system","level":2,"score":0.2906000018119812},{"id":"https://openalex.org/C2780056265","wikidata":"https://www.wikidata.org/wiki/Q106239881","display_name":"High dynamic range","level":3,"score":0.28949999809265137},{"id":"https://openalex.org/C45613198","wikidata":"https://www.wikidata.org/wiki/Q1134091","display_name":"Optical filter","level":2,"score":0.28529998660087585},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.2590000033378601},{"id":"https://openalex.org/C132794960","wikidata":"https://www.wikidata.org/wiki/Q27304","display_name":"Chirp","level":3,"score":0.2590000033378601},{"id":"https://openalex.org/C65165936","wikidata":"https://www.wikidata.org/wiki/Q575784","display_name":"Baseband","level":3,"score":0.2572000026702881},{"id":"https://openalex.org/C124967146","wikidata":"https://www.wikidata.org/wiki/Q3457898","display_name":"Spectral resolution","level":3,"score":0.25220000743865967},{"id":"https://openalex.org/C75172450","wikidata":"https://www.wikidata.org/wiki/Q623950","display_name":"Fast Fourier transform","level":2,"score":0.2515000104904175}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1364/opticaopen.31937424","doi":"https://doi.org/10.1364/opticaopen.31937424","is_oa":true,"landing_page_url":"https://doi.org/10.1364/opticaopen.31937424","pdf_url":null,"source":null,"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":"Optica Open","raw_type":"posted-content"}],"best_oa_location":{"id":"doi:10.1364/opticaopen.31937424","doi":"https://doi.org/10.1364/opticaopen.31937424","is_oa":true,"landing_page_url":"https://doi.org/10.1364/opticaopen.31937424","pdf_url":null,"source":null,"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":"Optica Open","raw_type":"posted-content"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W7150794822","https://openalex.org/W2185169774","https://openalex.org/W7164324895","https://openalex.org/W2534217903","https://openalex.org/W4413320464","https://openalex.org/W1555995072","https://openalex.org/W2137705579","https://openalex.org/W2919265642","https://openalex.org/W2155841799","https://openalex.org/W4407128151"],"abstract_inverted_index":{"We":[0],"present":[1],"a":[2,23,33,94,101,117,123,127,240,275],"mixed-mode":[3],"signal-processing":[4],"framework":[5],"in":[6,47,156,161,188,290],"which":[7],"analog":[8],"optical":[9],"spectral-phase":[10,210],"modulation":[11,69],"is":[12],"followed":[13,70],"by":[14,43,54,71,213],"coherent":[15,72],"detection":[16],"and":[17,113,172,176,221,250,294],"digital":[18],"phase":[19,68,108,199,237],"extraction":[20],"to":[21,226],"generate":[22],"bounded":[24,128],"representation":[25],"of":[26,206,243,261],"high-":[27],"dynamic-range":[28],"temporal":[29,107,248],"waveforms":[30],"that":[31,63,98,121,234,257,271,282],"requires":[32],"substantially":[34],"shorter":[35],"fixed-point":[36,157],"word":[37,153,262],"length":[38,154,263],"for":[39,279],"downstream":[40],"DSP.":[41],"Motivated":[42],"the":[44,48,60,77,84,89,111,144,152,197,207,214,235,244,265,284],"VEViD":[45],"algorithm":[46],"Physics-inspired":[49],"Computer":[50],"Vision":[51],"(PhyCV)\u2014itself":[52],"inspired":[53],"photonics":[55],"time":[56],"stretch\u2014the":[57],"method":[58],"exploits":[59],"natural":[61,241],"equalization":[62,242],"arises":[64],"from":[65,110],"near-field":[66],"spectral":[67,198,236],"detection.":[73],"In":[74],"this":[75,131,183,224,272],"representation,":[76],"resulting":[78],"in-phase":[79],"(I)":[80],"channel":[81,92],"closely":[82],"preserves":[83],"original":[85],"signal":[86,245],"profile,":[87],"while":[88,246],"quadrature":[90],"(Q)":[91],"provides":[93,239],"spectrally":[95],"filtered":[96],"response":[97],"functions":[99],"as":[100,196,231],"highly":[102],"accurate":[103],"dark-field":[104],"measurement.":[105],"The":[106,201],"derived":[109],"I":[112],"Q":[114],"channels":[115],"follows":[116],"nonlinear,":[118],"amplitude-compressed":[119],"transform":[120],"maps":[122],"wide-dynamic-range":[124],"input":[125],"onto":[126],"output.":[129],"Because":[130],"output":[132,256],"spans":[133],"far":[134],"fewer":[135,149,259],"distinguishable":[136],"amplitude":[137],"levels,":[138],"it":[139],"can":[140,185],"be":[141,186,274],"represented":[142],"at":[143],"same":[145],"relative":[146],"fidelity":[147],"using":[148],"bits,":[150],"reducing":[151],"needed":[155],"DSP":[158,166,288],"hardware.":[159],"This":[160],"turn":[162],"facilitates":[163],"efficient":[164],"hardware":[165,289],"through":[167],"narrower":[168],"multipliers,":[169],"smaller":[170],"registers":[171],"memory,":[173],"lower":[174],"power,":[175],"higher":[177],"clock":[178],"rates.":[179],"To":[180],"evaluate":[181],"whether":[182],"concept":[184],"realized":[187],"hardware,":[189],"we":[190],"emulate":[191],"an":[192,255],"LCOS-based":[193],"programmable":[194],"waveshaper":[195],"modulator.":[200],"model":[202],"incorporates":[203],"hardware-informed":[204],"characteristics":[205],"waveshaper,":[208],"including":[209],"discretization":[211],"imposed":[212],"LCOS":[215],"pixel":[216],"grid,":[217],"finite":[218],"frequency":[219],"resolution":[220],"accuracy.":[222],"Applying":[223],"module":[225],"representative":[227],"high-dynamic-range":[228],"waveforms,":[229],"such":[230],"LiDAR,":[232],"shows":[233],"engineering":[238],"preserving":[247],"structure":[249],"enhancing":[251],"low-amplitude":[252],"returns,":[253],"yielding":[254],"needs":[258],"bits":[260],"than":[264],"input.":[266],"These":[267],"proof-of-concept":[268],"results":[269],"suggest":[270],"may":[273],"promising":[276],"physical-computing":[277],"primitive":[278],"real-time":[280],"preprocessing":[281],"lightens":[283],"word-length":[285],"burden":[286],"on":[287],"high-dynamic-":[291],"range":[292],"sensing":[293],"communication":[295],"systems.":[296]},"counts_by_year":[],"updated_date":"2026-10-28T10:33:24.094632","created_date":"2026-04-07T00:00:00"}