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olivcr., 1. (ilcsk, a r i d 1'.K. Pnictial lkpt. of Electriccd b,'figineeririg, i'rincelon Univ ly, I'ritzceton, NJ 08544 tligli-speccl, all-optic;il nlo;isut~cinctii iccluiic~nes ilisi piovidc high tonipor.al icscilntioli arid wide baiidwidtli x c vcry nsorul Tor cvaluatinl: the quality iii' liigli IJii iatc sigiuls io iilii.iilhsi optical colitiiuiriicatioii systcins. As clcctioriic sampling (~isci1loscol)tis aie typic:illy liltiitod io ii barldwidtli oi' 50 G I I/, IIOW m x u r c n m i t systorns arc oeatletl to dctcct uliraibst optical prilse t i a i w especially in Optical I'itliti Division Mnltiplcxcd (OTIIM) riciworks wlie,.e it single w~!vcle,tgth elianiicl riuy s q q i c i i t ii baiidwicltti ur mire t h i 200 GLIx.. 1'0 ;idtlrcss those ttccds, itiaay opiical siitiipliiig systems based tipuai optieul iioillincaiities in bulk nattcri;ils (11' libar have bccn dernunsli~alctl 11, 2).