公开(公告)号：US12210266B2

公开(公告)日：2025-01-28

申请号：US18344442

申请日：2023-06-29

Applicant: NKT PHOTONICS A/S

Inventor： Cameron Lesley Colwell Smith ,  Alexandra Lupi ,  Martin Erland Vestergaard Pedersen ,  Jens Kristian Lyngsø ,  Martin D. Maack

IPC: G02F1/35 ,  G02F1/365

Abstract: An optical source (100) comprising a supercontinuum generation apparatus comprising a pump light source (102), a twisted photonic crystal fibre, PCF, (104) and a wideband quarter-wave retarder (106). The pump light source is arranged to provide circularly polarised pump light. The twisted PCF is arranged to receive the pump light and to convert the pump light into circularly polarised supercontinuum light. The wideband quarter-wave retarder is arranged to convert the circularly polarised supercontinuum light into linearly polarised supercontinuum light. The optical source may additionally comprise a wavelength tunable bandpass optical filter arranged to transmit the linearly polarised supercontinuum light at wavelengths within a selected range.

公开(公告)号：US11726385B2

公开(公告)日：2023-08-15

申请号：US17921494

申请日：2021-04-27

Applicant: NKT PHOTONICS A/S

Inventor： Cameron Lesley Colwell Smith ,  Alexandra Lupi ,  Martin Erland Vestergaard Pedersen ,  Jens Kristian Lyngsø ,  Martin D. Maack

IPC: G02F1/35 ,  G02F1/365

CPC classification number: G02F1/3528 ,  G02F1/3503 ,  G02F1/365 ,  G02F2202/32

Abstract: An optical source including a supercontinuum generation apparatus including a pump light source, a twisted photonic crystal fibre, PCF, and a wideband quarter-wave retarder. The pump light source is arranged to provide circularly polarised pump light. The twisted PCF is arranged to receive the pump light and to convert the pump light into circularly polarised supercontinuum light. The wideband quarter-wave retarder is arranged to convert the circularly polarised supercontinuum light into linearly polarised supercontinuum light. The optical source may additionally include a wavelength tunable bandpass optical filter arranged to transmit the linearly polarised supercontinuum light at wavelengths within a selected range.