1550nm1x4保偏耦合器
features
low insertion loss & excess loss            high extinction ratio & high isolation          high stability and reliability
application
edfa
fiber optical instrument
power monitoring
fiber sensor
parameter 1x4 1x8
center wavelength (nm) 1310 or 1550 or 1520~1620 1064 1310 or 1550 1064
operating wavelength range (nm) +/-30
insertion loss (db) ≤7.5typ. 7.0 ≤8.0typ. 7.5 ≤11.0typ.10.5 ≤11.5typ. 11.0
wdl (db) ≤0.5, typ. 0.3
uniformity  (db) ≤0.8 ≤1.0
return loss (db) ≥50 ≥50
directivity (db) ≥50 ≥45
extinction ratio  (db) type b(both of axis working)                         ≥20 ≥17
type f(fast axis blocked) ≥22 ≥22
pdl (only for  type b) (db) ≤0.1 ≤0.15
temperature dependent loss( db/℃) ≤0.006 ≤0.008
fiber type panda fiber
fiber length (m) 0.8
operating temperature (℃) -5 to+70
storage temperature(℃) -40 to +85
package dimensions(mm) 100x80x10 125x96x16