Tissue model
Pi	The i-th depth position
P0	The position of a tissue surface
Lij	The tissue layer between Pi and Pj
Δzij	The distance between Pi and Pj, same as the thickness of Lij
bij	The birefringence of Lij
	Variants of phase retardation
sPR	Single-trip phase retardation
rPR	Round-trip phase retardation
cPR	Round-trip cumulative phase retardation
lPR	Local round-trip phase retardation
lPRij	The local round-trip phase retardation from Pi to Pj
dPR	Depth-differentiation of cPR
	Variants of Jones matrix
Jin	The Jones matrix of illumination optics
Jout	The Jones matrix of collection optics
Jmi	The raw measured Jones matrix measured at the depth position Pi
Jsij	The single-trip Jones matrix from Pi to Pj
Jrij	The round-trip Jones matrix from Pi to Pj
Jci	The cumulative Jones matrix at Pi
JLij	The local round-trip Jones matrix from Pi to Pj
	General notations relating to Jones matrix
${\lambda }_x^{(i)}$	The i-th eigenvalue of a Jones matrix Jx
Λx	The eigenvalue-matrix of Jx defined as $\left[\begin{array}{llll}{\lambda }_x^{(1)}\hfill & 0;\hfill & 0\hfill & {\lambda }_x^{(2)}\hfill \end{array}\right]$
Vx	The eigenvector-matrix whose columns are eigenvectors of Jx
	System parameter
k0	The center wavenumber of a probe beam