Influence of LED thermal drifts on optical cross talk in spectrally sliced WDM systems
✍ Scribed by G. Murtaza; J. M. Senior
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 98 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
✦ Synopsis
Figure 4 Variation of forward and backward propagation constants with wavelength Figure 5 Variation of attenuation constants with wavelength increases differential leakage loss increases. At the zero chromatic dispersion wavelength of 1.55 m, leakage loss is found to be 30 dBrmm. These calculations have been carried out for X s 0.635. The numerical data used for this problem g are s 4.8929, s , X s 0.635, s 3.783, and s 1 g 4 g 3 4
5.0634. The thicknesses of the gyrotropic and buffer layers are 4 and 0.2 m, respectively. Figures 4 and5 show the phase constant and leakage loss variation as a function of X g at s 1.3 m. It is seen from the results that backward-and forward-traveling waves propagate with different phase constants and the difference between backward leakage losses results in isolation of about 22 dBrmm with X s 0.54.
g
Conclusions
The study reveals a distinct nonreciprocal behavior of the leakage loss that depends mainly on the off-diagonal element of the permeability tensor characterizing the gyrotropic medium. Such a waveguide can possibly be used as a new type of isolator at optical frequencies.