An Integrated Optic Approach to 10/spl mu/m LIDAR

Abstract

The paper describes a novel integrated optics approach to coherent IO.6p.m LTDAR sysLeJIl!S The COIlrepI IS based on usmg hoUow wavc:guides to gUide light bcrnCl:n romponell.� l(X;ated in a conmlOli dl.\::lcctnc substra1e The concept referred to as EQllow �3veguidc Integrated Qptm (HOW-IO), lias am'aJltagcs in relation to achieving and maintaining good coherent mi...ang efficieJldes and has lhe potenl1al to: redUtt size. increase ruggedness and ]ov.-cr manufactunng costs The figure shmvs a plan V!e\\.' photograph of a HOW-TO interferometer subs,'Slcm �hich \'\f ha\'f realtsed m practice. The mtegratcd oomponents and interconnecting waveguides are c1earl)' visible TIlt' subsystem was formed i n 11 lROxJ90xZ(Jmm polycl'vstalJine al umIna SubSlralC usillg a computer confrolled lmU;lIg machine Polycrystalhnt: alumina was chus�:ll as the substrate and lid material because its o p tical pT!1penies. In c�nJunC:l1!1n with \\'hegl.ll dcs of approprIate cross sectIon allD\\ Ille realisatIOn of 101\