Working Distance ≤ 1m
High coupling efficiency when used in pairs
Spot Size: 350μm - 1400μm

Single-mode fiber collimator is packaged by precise positioning of fiber pigtail and focusing lens, which can transform the output light of fiber into parallel light beam (Gaussian beam) or couple external parallel light into the fiber. It can also be used alone to achieve the required spot size at a specific position according to the predetermined divergence angle.
According to the working distance, it can be divided into fixed working distance (fixed focus) collimator and variable collimator for working distance range. Conventional lenses or Grin lenses should be selected according to different working distances. We recommend installing the collimator in an optical precision adjustment frame for adjustment to ensure the best coupling efficiency.





Difference


Fixed Working Distance Collimator


Variable Collimator for Working Distance Range




Working Distance


1M


0~1M  Any Position




Beam characteristics


Collimation / Focus


Collimation




Beam Size


At a fixed position, a precise sized beam spot can be obtained, with a minimum size of 20um. The beam size rapid changes when moved forwards or backwards.


Move forward and backward within an adjustable range, and the spot size changes very little.




Insert Loss For A Pair


Changes significantly with distance.


Insensitive to changes with distance




Output Loss


No difference




Return Loss


No difference




                                

Working distance ≤ 1m
Wavelength range: 405-1550nm
Spot size: 350u-1400u

Polarization-Maintaining Fiber Collimator is assembled precisely by PM fiber pigtail and a Grin lens or C-Lens, which can convert the divergent light into a parallel beam (Gaussian beam) from fiber export , or couple space parallel light into the fiber. It can be used singly to achieve a specified beam size at the required position, or paired with other optical components such as filters and isolators in between two collimators to meet specific customer needs. In fiber optic interferometric sensors based on optical coherence detection, the use of polarization-maintaining fibers can ensure the unchanged polarization direction, improve the coherence signal-to-noise ratio, and achieve high-precision measurement of physical quantities.
When making a polarization maintaining connector, the axis direction of the cat's eye connection is aligned with the connection line direction of the key slot fiber core, also known as slow axis alignment. When the two lines are perpendicular, it is fast axis alignment.
                                

Single-mode WD Max45mm
Multi-mode WD Max 10mm
Light exit angle ＜0.1°
The preferred choice for fast fiber optic connection

Coaxial fiber collimator  also known as the non-deviation angle fiber optic collimator, its core characteristic lies in the nearly perfect coincidence between the output optical axis of the collimator and the mechanical axis. This design eliminates the need for precise adjustment of the output angle of the light beam during the installation process, greatly simplifying the installation procedure.Within the working distance range, the coaxial fiber collimator can always maintain excellent collimation performance, ensuring the stable transmission of optical signals. Especially in the paired installation, this collimator can achieve rapid and precise alignment, significantly reducing the insertion loss of the optical path and effectively improving the transmission efficiency of optical signals.
Features：
Both single-mode and multi-mode optical fibers can be fabricated
It supports flexible configuration without the need for in-depth calibration
The core optical components of the optical fiber rotary joint
The radiation-resistant coaxial collimator can be customized.
Application:Fiber bundle connectors ,Opto-electric rotary Jumper,Fiber rotation platforms,Intelligent robots
Oopto-electric current transformers with plug-and-play optical axis alignment.
                                

Spot size: 0.9-3.7mm optional
Excellent Gaussian spot characteristics within 1m
Insensitive to wavelength selection

Achromatic Lenses Collimators  It consists of a group of long focal length collimating optical systems with chromatic aberration and distortion compensation design, making the focal length of the collimator insensitive to wavelength bandwidth. The divergent light beam emitted from the optical fiber, providing a good collimating effect and beam shape within a certain distance range. The optical surfaces of the lens group are coated with anti-reflection film to minimize surface reflection. The relative position of the lens and fiber is precisely adjusted to ensure that the deviation angle of the emitted light is within 0.3°, and standardized manufacturing processes ensure stable consistency of the product.
Features：
Three Connector Options：FC/PC、FC/APC、SMA905
Compatible with Narrow and Wide Key Connectors
Compact structure, Convenient for installation
The focal length has little influence on the wavelength, thus facilitating the handling of adjacent wavelengths.
It is recommended to use it together with Ysenser's standard patch cords to achieve better interchangeability and repeatability.
                                

Spot size: 0.8-4.8mm selectable
Excellent Gaussian spot characteristics
Sensitive wavelength selection
PC, APC, SMA interfaces selectable

Aspheric Lenses Collimators  The aspherical lens's unique aberration-correction design empowers it to execute highly efficient and accurate collimation of light beams. As a result, the energy of the output light beam assumes a Gaussian distribution. Both surfaces of the lens are coated with anti-reflection films, that significantly decrease surface reflection losses and substantially improve the light transmittance. Nevertheless, the aspherical lens possesses certain inherent characteristics. Specifically, it exhibits a chromatic aberration phenomenon, with a strong correlation existing between its effective focal length (EFL) and the wavelength. During the manufacturing , the relative positioning of the lens and the optical fiber has undergone extremely precise adjustments. This ensures that the deflection angle of the emitted light beam is maintained within an exceedingly narrow range of 0.5°. Consequently, it is better equipped to adapt to diverse application scenarios and system requirements.
Features：
Three Connector Options：FC/PC、FC/APC、SMA905
Compatible with Narrow and Wide Key Connectors
Compact structure, Convenient for installation
Custom Options including wavelengths
                                

Light spot: 0.8-3.5mm selectable
Small light output center displacement and light output deflection angle
Multiple types of single-mode fibers available

Aspheric Lenses Collimators with Fiber It adopts a compact structural design. The pigtail fiber with an inclination angle and the aspherical lens are precisely adjusted, ensuring that the emitted light presents a high-quality Gaussian beam and has excellent collimation characteristics at the same time.Anti-reflection films are coated on both the surfaces of the lens and the optical fiber, which greatly reduces the reflected light at the light-emitting end face and significantly decreases the optical noise in the optical path, making the light transmission process more stable.
The long-focal-length collimator is designed with a bent-shaped housing, which can effectively correct the light-emitting deflection angle caused by the angled pigtail fiber, ensuring that the light beam is collimated and emitted with almost no deviation. For the short-focal-length collimator, the deflection angle caused by the light output of the angled pigtail fiber is extremely small and can be almost ignored. Therefore, a straight-through housing is used. In this way, while meeting the performance requirements, it also takes into account the structural stability and reliability.
Features：
The deflection angle of the emitted light and the deviation of the emitted light center are both minuscule.
Fiber Type Options: 405HP/460HP/630HP/780HP/Hi1060/G625D 
Connector Options：FC/PC、FC/APC、LC、SC、SMA905
The Type of Cable Options: PVC0.9mm/2.0mm/3mm, 3mm armored cable, 3mm Stainless steel, 0.9mmTeflon
The packaging material is 304 stainless steel, and the structure is compact and reliable.
It can be customized with a packaging structure for applications in a non-magnetic and vacuum environment.
                                

Light spot: 0.8-3.5mm selectable
ER ≥ 20dB
Small light output center displacement and light output deflection angle

Aspheric Lenses Collimators with PM Fiber boasts a compact and ingeniously designed structure. The angled pigtail fiber with a inclination angle and the aspherical lens undergo meticulous and precise adjustments. This meticulous calibration ensures that the emitted light manifests as a high-quality Gaussian beam , and simultaneously endowing the collimator with exceptional collimation characteristics.
Furthermore, the internal precision opto-mechanical structure has undergone a thorough and in-depth optimization process. This optimization effectively minimizes the detrimental impact of the movement of the rear-end fiber on the emitted light spot, thereby providing a robust and dependable safeguard for the stable transmission of signals during intricate precision measurement or control operations.
Additionally, leveraging Ysenser's sophisticated precision optical debugging techniques and comprehensive testing methodologies, both the deviation of the center of the emitted beam and the light deflection angle can be accurately and precisely regulated within an extremely narrow margin. This exemplifies the product's remarkable high precision and reliability in optical performance, setting it apart in the field.
Features：
The deflection angle of the emitted light and the deviation of the emitted light center are both minuscule.
Fiber Type Options: PM460/PM630/PM780/PM980/PM1310/PM1550
Connector Options：FC/PC、FC/APC
The Type of Cable Options: PVC0.9mm/2.0mm/3mm, 3mm armored cable, 3mm Stainless steel, 0.9mmTeflon
The packaging material is 304 stainless steel, and the structure is compact and reliable.
It can be customized with a packaging structure for applications in a non-magnetic and vacuum environment.
                                

X/Y axis adjustment stroke range: ±0.7mm
Z axis adjustment stroke range: ＞2mm
Angle adjustment range: ±4°

FiberPort Coupler/Collimators  When the connector and the fiber remain stationary, the internal lens has five alignment degrees of freedom: linear alignment in the X and Y directions, pitch and yaw alignment angles, and adjustment of the Z-axis using both pitch and yaw. The travel range in the X and Y directions is ±0.7 mm, the travel range in the Z direction is greater than 2 mm, and the pitch and yaw adjustment range is ±4°. It has good structural stability and high coupling efficiency. If the wavelength of the light source is changed, the collimator needs to be re-adjusted to achieve higher coupling efficiency.
Features：
Connecting fiber collimated output or coupling free space collimated light into fiber.
Five Degrees of Freedom Plus Rotational Adjustment
Optional combination of an aspherical lens and an achromatic lens
Three Connector Options：FC/PC、FC/APC、SMA905
Threee AR-Coated Lens Options：
400-700nm、650-1050nm、1050-1650nm
When used in combination with Ysenser's standard jumpers, it can improve coupling efficiency and ensure good repeatability.
                                

Air-gap achromatic design
Wavelength range: 405-1650nm
PC, APC, SMA interfaces optional

Large Beam Collimators  By using an air gap bonded lens, it can provide better beam quality than aspherical lenses and achromatic lenses in terms of collimation performance. The design of a low aberration lens group can achieve a beam closer to a Gaussian beam, with smaller divergence angles and smaller wavefront errors.
Features：
Three Connector Options：FC/PC、FC/APC、SMA905
Compatible with Narrow and Wide Key Connectors
Compact structure, Convenient for installation
Custom Options including wavelengths
It is recommended to select Ysenser's standard patch cords to improve the repeatability and consistency of the parameters.
                                

Focal length adjustment range: ±1mm
Recommended for fiber coupling

Adjustable Aspheric Collimators is engineered with a spring - fitted optical lens housed within its mechanical structure. It serves to collimate the fiber - emitted light beam and can also be utilized for coupling spatial light into the fiber. By rotating the outer sleeve of the collimator, the internal optical lens can be precisely translated along the vertical axis direction. This translation enables the adjustment of the distance between the lens and the fiber endface, thereby achieving different light spot sizes. Once the optimal position is attained, the housing knurled locking ring can be employed to fix the regulator firmly. 
Features：
Connecting fiber collimated output or coupling free space collimated light into fiber
Three Focal Length Options：4.5 mm、7.5 mm、11mm
adjustment alignment error < 15 mrad
Three Connector Options：FC/PC、FC/APC、SMA905
Threee AR-Coated Aspheric Lens Options：
400-700nm、650-1050nm、1050-1650nm
When used in combination with Ysenser's standard jumpers, it can improve coupling efficiency and ensure good repeatability.