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Lensed Fiber

Lensed Fiber

Lensed Fibers are required for the manufacturing of Butterfly Type and Optical Pump Modules. By our processes of discharging, etching, lapping, polishing and grinding the end face of the fiber, we can configure the Lensed Fiber form similar to an actual lens shape suitable for connection and improved coupling efficiency with LD and PD Modules.

We have several lens fiber types, CLF (Cylindrical Lensed Fiber) and SLF (Spherical Lensed Fiber) and we can also combine the process to include Metallization, AR-Coating, Metal Tube and FBG with the lensed fiber assembly.

All of our Lens Fibers are custom products designed per customer specification requirements and processed based on our extensive experience resulting in an optimum design to fulfill your needs.

Lensed Fiber Processing Technology

  • Select fiber tip configuration and beam pattern.
  • Unique fiber tip polishing process utilizing own process equipment.
  • Reducing fiber core offset by well established processing.

Lensed Fiber Processing Technology
Fiber Tip Configration Beam pattern Applications
Spherical Lensed Fiber(SLF)

Spherical Lensed Fiber(SLF)

Spherical Lensed Fiber(SLF)
Spherical Lensed Fiber(SLF)
  • 1310nm, 1550nm LD Coupling
    → LD Module
  • OWG, Si-wire waveguides
  • Out put to PD
  • Microscopic region Lighting
Cylindrical Lensed Fiber(CLF)

Cylindrical Lensed Fiber(CLF)

Cylindrical Lensed Fiber
Cylindrical Lensed Fiber
  • 980nm LD Coupling
    → Amp LD Module
    → High Power LD Module
    (Fiber Laser, Medical)
  • Visible Light etc.
  • OWG, Functional waveguides
Biconical Lensed Fiber(BLF)

Biconical Lensed Fiber(BLF)

Biconical Lensed Fiber
Biconical Lensed Fiber
  • 1480nm LD Coupling
    → Amp LD Module
  • Visible Light etc.
  • OWG, Functional waveguides

Applications

Applications Applications

Spherical Lensed Fiber

スフェリカルレンズドファイバ
The best lensed fiber for coupling with circular beam patterns

Spherical Lensed Fiber (SLF), the end face tip of the optical fiber is processed into a conical or circular shape by our lapping, grinding and polishing techniques so that the apex matches exactly the core of the fiber. SLFs have excellent coupling efficiency for light with circular beam patterns. They are often used for optical communication LD modules, optical waveguides, silicon wire waveguides, output to PDs, and for illuminating very micro areas.

スフェリカルレンズドファイバ

Applications

1310m, 1550nm LD Coupling

LD Module

OWG, Si-wire Waveguides

Optical Probes

Output to PD

Optoelectronic Integrated Circuits(OEIC)

Microscopic region Lighting

Gas Sensors

VCSEL Connections

Methane Gas Sensors

Spot Irradiation

Specifications

Lens Radius R

3≦R≦20 [μm]

Fiber Strip Length Ls

5≦Ls≦30 [mm]

Fiber

SMF, MMF, PMF, Speciality Fiber

Taper Angel θ

50 - 140, Special: 5 - 15, 30 [deg.]

Options

AR Coating

980, 1310, 1480, 1550 nm Reflectance Max: 0.3%

Metallization

Chemical Plating Ni, Au / Physical Sputtering Ti, Pt, Au

The Coupling Efficiency of SLF

The Coupling Efficiency of SLF

The Coupling Efficiency profile

The Coupling Efficiency of SLF

Cylindrical Lensed Fiber

シリンドリカルレンズドファイバ
The best lensed fiber for coupling with oval beam patterns

Cylindrical Lensed Fiber (CLF), the end face tip of the fiber is processed into an oval shape by our lapping, grinding and polishing techniques so that the apex matches exactly with the core of the fiber. CLFs have excellent coupling efficiency for light with oval beam patterns.They are often used for optical communication LD modules, optical waveguides, silicon wire waveguides, output to PDs, and for illuminating very micro areas.

シリンドリカルレンズドファイバ

Applications

1480nm LD Coupling

Amp LD Module, High Power LD Module(Fiber Laser, Medical)

Visible Light etc.

Integrated Tunable Laser Assemblies(ITLA)

OWG, Functional Waveguides

FIber Optic Gyros

Specifications

Fiber

SMF / MMF / PMF / Speciality Fiber

Lens Radius R

3≦R≦20 [μm]

Fiber Strip Length

5≦Ls≦30 [mm]

Taper Angel θ

50 - 140 [deg.]

Options

AR Coating

980, 1310, 1480, 1550 nm Reflectance Max. 0.3%

Metallization

Chemical Plating Ni, Au /
Physical Sputtering Ti, Pt, Au

The Coupling Efficiency of CLF

The Coupling Efficiency of SLF

The Coupling Efficiency profile

The Coupling Efficiency of SLF

Biconical Lensed Fiber

バイコニカルレンズドファイバ
The best lensed fiber for connection with elliptical beam light patterns

Biconical Lensed Fibers(BLF) are created by taking the oval fiber shape of the Cylindrical Lensed Fiber(CLF) and further cutting equivalent incline planes on the orthogonal planes, creating a pyramid-like shape on the end face tip of the fiber. Each axis acts as a lens by adding curvature to a semi-cylin-drical shape, and by changing the curvature of each, corresponding to the long axis and short axis of the elliptical beam pattern. BLFs are used in LD optical amplifiers and optical waveguides.

バイコニカルレンズドファイバ
  • Optical direct coupling to LD aspect ratio is typically 2:1
  • High Coupling Efficiency
  • Assembly for 1310, 1480 and 1550nm LD etc.
レンズドファイバ加工技術

Applications

1480nm LD Coupling

Amp LD Module

Visible Light etc.

High Power LD Module

OWG, Functional Waveguides

Specifications

Fiber

SMF, MMF, PMF, Speciality Fiber

Lens Radius R

3≦R≦20 [μm]

Fiber Strip Length

5≦Ls≦30 [mm]

Taper Angel θ

50 - 140 [deg.]

Option

AR Coating

980, 1310, 1480, 1550 nm Reflectance Max: 0.3%

Metallization

Chemical Plating Ni, Au /
Physical Sputtering Ti, Pt, Au

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