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OCT Components and Subsystems

Optical Coherence Tomography (OCT) is a technique that utilizes low coherence optical interference to create noninvasive 3D images of biological tissue in real time. The initial rapid growth of OCT was driven by ophthalmic applications, particularly the unique ability to image the layers of the eye’s retina “in vivo”, and it is now being applied to the biometric measurement of the eye’s anterior segment (cornea and lens), significantly improving treatments such as cataract replacement. The technique is now being applied to imaging of the skin, artery walls, the esophagus and other tissues for clinical diagnostics and as an alternative to biopsy. High quality, performance and reliability has made G&H a leading supplier for OCT ophthalmology instrumentation, providing the fused fiber couplers, interferometers, and collimators used in many commercial systems. Exacting control over our manufacturing processes ensures highly repeatable performance and tight performance distributions for all of our OCT components and subsystems.

OCT Components and Subsystems

Our current biomedical imaging product portfolio includes:
  • Wideband fiber couplers (850 nm, 1060 nm and 1300 nm)
  • Fiber interferometers
  • High specification fiber collimators
  • Optical delay lines
  • Fiber-coupled acousto-optic frequency shifters
  • Spectrometers
  • Fiber switching circuits
  • 阶梯式纤维组件
  • Fiber based ASE sources
  • Full optical head assembly


G&H OCT延迟线
光纤耦合器用于光学相干断层扫描(OCT)光发动机,以形成OCT系统用于生成深度信息的干涉仪。虽然传统的视网膜扫描系统可以使用具有〜30nm的带宽的光源,但最新一代OCT系统正在移动到> 100nm带宽以提供更高分辨率的图像。作为响应,G&H开发了极其宽带光耦合器(E亚搏开户网址WOC),提供了超过140nm波长范围内的市场领先性能,以用于采用下一代宽带波长扫描源的高分辨率OCT成像系统。EWOC(极端宽带OCT耦合器)在扩展带宽上分配,并且可以在流行的OCT波长(850nm,1060nm和1310nm)的任何一个下方操作。耦合器专为低损耗和扩展带宽操作而设计,利用G&H专有的融合光纤技术.

Delay lines

G&H OCT延迟线
G&H OCT延迟线
The G&H variable optical delay line provides fast and accurate optical path length change in a compact housing. Based on a point-and-return architecture with a customizable chassis that can be adapted to incorporate additional optical components, the unit is designed to be easily incorporated into any modular optical coherence tomography (OCT) system architecture. Optical interface is through single fixed fiber pigtail which can be specified to any length and terminated with all commonly used optical connectors.


FIber Optic Collimator
FIber Optic Collimator
G&H offers a range of non-contact style, single mode, fiber collimators incorporating achromatic lenses. Anti-reflection coatings are employed to minimize back reflections. G&H’s proprietary alignment and assembly processes produce a beam having low pointing error that is stable over a wide range of environmental conditions.
G&H OCT fiber collimators are manufactured to high opto-mechanical tolerances to enable simple incorporation into production line processes.

Acousto-Optic Frequency Shifter (AOFS)

Acousto-Optic Frequency Shifter
Acousto-Optic Frequency Shifter
紧凑型声光频率换档器具有低功耗0.5W 40MHz供应要求和高衍射效率,该装置非常适用于外差干涉系统,特别是激光多普勒速度,并设计用于促进双程配置

High performance OCT subsystems





G&H custom FO module
G&H custom FO module
G&H’s custom modules are assemblies of passive and/or active optical components designed to provide a required functionality. They enable customers to stay focused on their core competence whilst reducing time to market and development costs.

Applications of OCT components and subsystems

OCT research, medical instrumentation, clinical diagnostics.

Product 功能 Product Family 波长 Product Code