| 摘要 |
A bi-directional polarization independent optical isolator and monitor/amplifier system simultaneously transmits two separate signal rays in opposite forward directions while simultaneously suppressing backward transmission of each signal ray in its respective reverse direction. Both of the counter-propagating signal rays are amplified within an optical gain element. The separate signal rays include either two wavelength bands completely separated in wavelength or two sets of wavelengths, each of a plurality of wavelengths, such that wavelengths of the two signal rays are interspersed in alternating fashion. The bi-directional polarization independent optical isolator portion of the system comprises a birefringent polarization separation element, a reciprocal rotation element, a lens, a reflective element that is either a mirror/waveplate assembly or a non-linear interferometer, a lens, a non-reciprocal optical rotation element, and a birefringent polarization combining element.
|
