| 摘要 |
<p>A polarisation state insensitive optical discriminator is provided by a Mach Zehnder interferometer (21, 22, 23, 24) constructed in polarisation preserving optical fibre, and two optical fibre polarisation beam splitters (20, 25). Each polarisation beam splitter is interconnected with the interferometer in such a way that its two orthogonally polarised outputs are launched to opposite ends of the interferometer with the same state of polarisation. <IMAGE></p> |
