Broadband Polarizing Beam Splitter

S polarized light is reflected at a 90 degree angle while p polarized light is transmitted.

Broadband polarizing beam splitter.

An ultra broadband polarization beam splitter pbs with low excess loss el and a high extinction ratio er is proposed and demonstrated for the case with 340 nm thick silicon on insulator waveguides. P polarized light is transmitted while s polarized light is reflected both with negligible absorption. The asymmetric directional coupler consists of a regular strip waveguide and a sub wavelength grating swg waveguide. 10 5 laser quality r unp.

Each beamsplitter consists of a pair of precision high tolerance right angle prisms cemented together with a dielectric coating on the hypotenuse of one of the prisms. A dielectric coating provides long term stability. Our broadband non polarizing hybrid cube beamsplitters are ideal for use with multiple lasers or tunable sources. Broadband polarizing plate beamsplitters consist of a thin layer of aluminum microwires adhered to a glass window.

An unpolarized beam is split into two orthogonal linearly polarized components. Even power split ratio insensitive to polarization. These beamsplitters are an alternative and economical substitute for ruled or holographic wire grid polarizers. Plate beamsplitters broadband 50 50 part code.

Here the pbs is realized by using cascaded adiabatic dual core tapers which consist of a strip core and a subwavelength grating core. A polarizing beamsplitter cube splits randomly polarized beams into two orthogonal linearly polarized components. Broadband and chromatically neutral. Broadband polarizing beamsplitter cubes.

1 0 in to 4 0 in diameter tolerance. The polarizing beam splitter coatings generally perform poorly outside the designed spectral range so the pbs124 will not be suitable around 1800nm. 0 0 0 20 mm standard thickness. Incoming beams are both transmitted and reflected 45 with the s and p polarized components matched to within 10.

Thorlabs 50 50 uv fused silica broadband beamsplitters which are available in ø1 2 ø1 25 mm x 36 mm and ø2 versions have a beamsplitter coating for the 250 450 nm range deposited on the front surface that has been optimized for a 45 angle of incidence. We design and experimentally demonstrate a polarizing beam splitter pbs on a silicon on insulator soi platform based on an asymmetric directional coupler. 50 10 standard diameter. Four broadband multilayer coatings are offered covering the 420 680 nm 620 1000 nm 900 1300 nm and 1200 1600 nm wavelength ranges.

Designed for broadband applications techspec broadband polarizing cube beamsplitters offer a transmission of greater than 90 for p polarized light and a reflection efficiency of greater than 99 for s polarized light across the entire design wavelength range.