(I)

/ n1>n2

:8 ~10mm50mm125mm

d

d

/

PAGE

12

: E(x,y,z,t)H(x,y,z,t): E(x,y,z)H(x,y,z)E(x,y)H(x,y)E(x,y)H(x,y)

c2w2em-b2n2 k02-b2 b=n(r)k0cosqz,c,.

----;----;----.----,

EzHz,: (1)(TEM): EzHz0; (2)(TE): Ez0, Hz0; (3)(TM): Ez0,Hz0; (4)(HEEH):Ez0, Hz0 HE(EH),TE(TM)

(r)(n); ; dr/dS, n, ;,nr,dr/dS, ,

:

: ::

: NA,

: n1n2

()

: : : NA(r),

: (rip):

drr0dsdzxyz(drdS) |r0sinz(r0)sin(r0)(r ddS)|r0 sinz(r0)cos(r0) (dzdS)|r0 cosz(r0)r0

: n(dz/dS)=const., ,

n(r)dz/dSn(r)cosz(r)=n(r0)cosz(r0) ----

: Vp/c/ (GIOF)z, z,(SIOF)(SIOF)

:

r2d/dz r0n(r0)sinz(r0)cos(r0)

----

r2=r2d/dt= c/ 2 ,r:r;r

r :

2(dr/dz)2g(r)

r,dr/dz,z1z2(dr/dz0),,rzz1z2