Imaging system and related techniques

An arrangement comprising:

• a light transmission path arrangement which includes at least one of an optical fiber or an optical waveguide for propagating at least one electro-magnetic radiation, wherein the at least one electro-magnetic radiation is capable of being propagated to illuminate the sample with a beam of light, the light transmission path arrangement including a first fiber cladding region;
• and
• a light collection path arrangement which is separate from the light transmission path arrangement, the light collection path arrangement including at least one of a particular fiber core or a second fiber cladding region, wherein the light transmission path arrangement includes a further fiber core and the first fiber cladding region.

An apparatus comprising:

• at least one first arrangement which is configured to receive a plurality of electro-magnetic radiations, the at least one arrangement including a first channel and a second channel, the first and second channels being configured to transceive a first electro-magnetic radiation of the electro-magnetic radiations having a first mode and a second electro-magnetic radiation of the electro-magnetic radiations having a second mode which is at least partially different from the first mode;
• and
• at least one second arrangement comprising a first detector configured to detect the first electro-magnetic radiation and a second detector configured to detect the second electro-magnetic radiation.

An arrangement comprising:

• a light transmission path arrangement which includes at least one of an optical fiber or an optical waveguide for propagating at least one electro-magnetic radiation, wherein the at least one electro-magnetic radiation is capable of being propagated to illuminate the sample with a beam of light, the light transmission path arrangement including a first fiber cladding region;
• and
• a light collection path arrangement which is separate from the light transmission path arrangement, the light collection path arrangement including at least one of a particular fiber core or a second fiber cladding region, wherein the first fiber cladding region propagates the at least one electromagnetic radiation to illuminate the sample.