Although the above described three dimensional structure may preferably be used as an optical coupler in {TAIL ~ the manner} described in FIG 5, it will be apparent such devices may be shaped to serve as waveguides, and may provide curved as well as linear structures and connections, since the process described hereinabove may be used to fabricate {HEAD ~ structures} of arbitrary shape 
Although the above described three dimensional structure may preferably be used as an optical coupler in { TAIL ~ the manner } described in FIG 5 , it will be apparent such devices may be shaped to serve as waveguides , and may provide curved as well as linear structures and connections , since the process described hereinabove may be used to fabricate { HEAD ~ structures } of arbitrary shape
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