It 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 Hight into the fiber, It can be used singly to achieve a specimen bend size at the required position, or paired with other optical components such as fitters and isolators in between two Colima-tors 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 coher
ence signal-to-noise ratio, and achieve high-precision measurement ofphysical 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 us slow axis alignment. When the two lines are perpendicular,it is fast axis alignme.
High-quality polarization-maintaining design:
Ensuring stable polarization state Crafted with high-quality PM fiber (Panda/Bow-tie type) and polarization-preserving optical design, our collimator effectively maintains the linear polarization state of light throughout transmission. The PM fiber features stress-induced birefringence to lock the polarization direction, achieves a polarization extinction ratio (PER) of >30dB. It supports a broad wavelength range of 1260-1650nm, covering key communication bands for versatile system integration. The optical path is optimized to minimize polarization-dependent loss (PDL <0.05dB), ensuring consistent performance for polarization-sensitive signals.
Precision manufacturing process: Ensuring polarization accuracy
Our Polarization-Maintaining Fiber Collimator is manufactured using precise polarization alignment and hermetic encapsulation technology. The PM fiber's slow axis is aligned with the lens's optical axis within ±1° to maximize polarization preservation. The fiber end-face is angle-polished (8°) and AR-coated to minimize back reflections (<0.2%) and improve return loss (≥60dB). The collimator is designed to maintain high performance and reliability in various applications. features a stainless steel housing with integrated strain relief for the PM fiber pigtail (standard length 1m), enhancing mechanical stability and resistance to environmental stress. Long focal length variants adopt angled housings to accommodate angle polishing without beam deflection.
Core performance advantages: Adaptation to polarization-sensitive scenarios
Ultraopto’s Polarization-Maintaining Fiber Collimator offers outstanding polarization stability with a PER > 30dB, ensuring reliable performance in coherent communication systems. The collimator provides low insertion loss (≤ 0.3dB) and diffraction-limited beam quality, which are crucial for quantum sensing and LiDAR applications. It features an adjustable working distance (0 - 850mm) for flexible system design. with pointing stability <1mrad during adjustment. The device operates reliably across a wide temperature range (-40℃ to 85℃) and meets GR-63-CORE vibration standards, making it suitable for automotive, airborne and aerospace dynamic scenarios.
Full-scenario application coverage:
Empowering polarization-sensitive systems Our Polarization-Maintaining Fiber Collimator is widely applied in cutting-edge scientific research and industrial fields. In coherent optical communication (100G/400G), it ensures the polarization direction of local oscillator light and signal light is strictly matched to reduce bit error rate. For LiDAR systems in autonomous driving, it maintains polarization state to improve the signal-to-noise ratio (SNR) of echo signals by up to 20dB. In quantum key distribution (QKD) systems, it preserves the polarization state of single photons to ensure transmission fidelity. The collimator also finds use in fiber optic interferometers, optical coherence tomography (OCT) and aerospace optical sensors, delivering reliable performance for diverse polarization-sensitive applications.
Customized services:
Meeting personalized needs As a leading manufacturer of polarization-maintaining optical components, Ultraopto offers fully customized Polarization-Maintaining Fiber Collimator solutions to meet your unique application requirements. Our professional R&D team can tailor key parameters including wavelength range (1260-1650nm), PM fiber type (Panda/Bow-tie), working distance (0-850mm), connector type (FC/PC, FC/APC) and polarization extinction ratio (>30dB customizable). We support custom fiber pigtail lengths and housing designs for specialized integration needs. All custom collimators undergo multi-stage strict quality inspection, including PER testing, PDL measurement and environmental stability assessment, with a detailed quality report provided.
Quality Assurance and Technical Support:
Your Trusted Choice Backed by advanced polarization-maintaining technology and a complete quality control system, Ultraopto ensures stable batch supply and consistent product quality. Our production processes adhere to international optical component standards, with each collimator subjected to rigorous testing using polarization analyzers and beam profilers. We provide professional technical consultation on collimator selection, polarization system design and alignment procedures, helping you achieve optimal results for your polarization-sensitive application. Whether you need standard collimators for coherent communication or custom solutions for quantum sensing, Ultraopto’s Polarization-Maintaining Fiber Collimator delivers exceptional value and reliability.
For more detailed technical parameters, product quotation information or custom design solutions for our Ultraopto Polarization-Maintaining Fiber Collimator, please contact our professional sales and technical team through the official website, and we will provide you with efficient, personalized and professional optical solutions.
