Basic element for fiber optics means precision optical components, made from optical material and optical crystal, that are used in optical communication devices as collimator, isolator, circulator, interleaver, attenuator, switch and DWDM etc. Basic elements mainly include C-lens, micro wedges, true zero order waveplates, birefringent wedges, Mrico Prisms, Mrico PBS etc..

Prisms

1.Micro Penta Prism

Material: BK7 Grade A optical glass

Dimension Tolerance:±2mm

Flatness: l/4 at 632.8 nm

Reflectivity: R > 95% per face from @1550 nm

Surface Quality: 40-20 scratch and dig

Working Wavelength: 1310, 1550, 1590 nm

Note: Other sizes and coating are available upon request

2.Micro Right-Angle Prisms

Material: BK7 glass

Dimension Tolerance: +0.0, -0.2 mm

Clear Aperture: >80%

Flatness: l/2 @632.8 nm

Surface Quality: 60-40 scratch and dig

Reflectivity: R>95% per face @ center wavelength

Working Wavelength: 1310, 1550, 1590 mm

Bevel: 0.2 mm to 0.5 mm

Note: Other sizes and coating are available upon request

3.Roof Prisms

Material: BK7 A grade optical glass

Clear Aperture: >90%

Chip: <0.15mm, AB border<0.01mm

Parallelism: among S1 & AB<1'

Surface Quality: 40-20 scratch & dig

Flatness: l/8 @ 632.8nm

AR Coating on A,B&C: R<0.2%, @1550nm±50nm(IOA: 0°±5°)

4.Brewster Prisms

Material: Fused Silica

Clear Aperture: >90%

Surface Quality: B,C,E and F: 40-20 scratch & dig Other surfaces are fine ground

Flatness: < l/8 @ 632.8 nm

Perpendicularity: <0.3 degree

Parallelism: B & F, C & E: <10 seconds

Protective Chamfer: B & C, E & F's border can not be chamfered.

Chip: <0.15mm

No Coating

Micro Waveplate

Material: Crystal Quartz

Dimension:+0.0, -0.2mm

Wavefront Distortion:<l/8@632.8

Retardation tolerance: <l/500

Parallelism: <1 arc second

Surface Quality: 20/10 scratches and dig

AR coating: R<0.2% @1550nm

Standard Wave: quarter-wave (l/4), half-wave (l/2)

Micro PBS

The Micro PBS separate a laser beams into two different polarization beams. The micro PBS is generally used in fiber optical communication as the core part of polarizer, polarization beam combiner, interleaver.

Standard Specifications:

Material: BK7 grade A, optical glass

Dimension Tolerance: ±0.2mm

Flatness: l/4 @ 632.8 nm per 25mm

Extinction Ratio: >100:1

Beam Deviation: <3 arc minutes

Principal Transmittance: Tp>98% and Ts<0.5%

Principal Reflectance: Rs>99.5% and Rp<2%

Coatings: 1. Polarization beamsplitter coating on hypotenuse face,
                    2. AR-coatings (R<0.25%) on all input and output face.Standard wavelength:1310±20, 1550±20 nm

Note:Other sizes and coating are available upon request

LiNbO₃ Wedges and compensator

Standard Specifications:
Dimension Tolerance: ± 0.05mm

Wedge Angle Tolerance: ± 0.1°

Optical Axis Orientation: ± 0.5°

Flatness: l/4 @ 632.8 nm

Surface Quality: 20/10

AR-Coating: R<0.2% @1550±40nm

Polarization Beam Combiner Crystals

By assembly with one dual fiber PM collimator and one single fiber collimator, you can make your own pigtailed Polarization Beam Combiner, which is widely used in Raman Amplifier. This crystal set is also commonly used in Circulator and interleaver to combine the polarization beam. The mass high precision and low insertion loss crystal set for Polarization Beam Combiner, which used in fiber optical communication, is available from Crystech with competitive for OEM customer.

Standard Specifications:

Note: Other size separated angle are also available upon request