ZKTel\'s Optical Modules are electronic components that convert an electrical signal to an optical signal simultaneously. Optical Modules are categorized into LD (Laser Diode) Modules and PD (Photo Diode) Modules. Optical Transceivers are packaged PD and LD Modules. These products are the core devices for any optical communication system such as an Optical Transponder and an ONU (Optical Network Unit).We manufacture and provide the components that are used in Optical Modules and Assemblies. We have the ability to design and provide products from a trial sample basis up to a mass production level. Optical Modules are divided into two industry types. One type are known as Receptacle Modules. This type is represented by a TOSA (Transmitter Optical Sub-Assembly) and ROSA (Receiver Optical Sub-Assembly) Assemblies. The second types are known as Coaxial Modules which consists of Fiber Pigtails.ZKTel offers a range of InGaAs PIN Photodiodes specifically designed for Digital data Transmission applications featuring:High sensitivityLow dark currentLow capacitanceHigh speed responseWide operating temperature range from –40 to 85°CAvailable in various packages,Website: , pigtailed or in receptaclesZKTel PIN Photodiodes for Analogue Data Transmission are designed specifically for CATV and other high speed analogue receiver applications. They feature:Low Inter-modal DistortionWide dynamic rangeHigh sensitivity at 1310nm and 1550nmLow dark currentLow CapacitanceAvailable in various packages, pigtailed or in receptacles Part No.Data RateWavelengthVoltagePin TypePackage seriesFiber TypeZR14-31x155M1310/1550nm3.3V/5VPIN-TIA-pin-AReceptacle   ENoneZR15-51x1.25G1310/1550nm5VPIN-TIA-pin-AReceptacle   BNoneZR13-64x2.5G1310/1550nm3.3VPIN-TIA-pin-DReceptacle   ENoneZR13-65x2.5G1310/1550nm3.3VPIN-TIA-pin-EReceptacle   ENoneZR13-73x3G1310/1550nm3.3VPIN-TIA-pin-CReceptacle   BNoneZR15-74x3G1310/1550nm5VPIN-TIA-pin-DReceptacle   BNoneZR13-75x3G1310/1550nm3.3VPIN-TIA-pin-EReceptacle   BNoneZR13-35x155M1310/1550nm3.3VPIN-TIA-pin-APigtail   ASMZR13-55x1.25G1310/1550nm3.3VPIN-TIA-pin-APigtail   BMMZR13-65x2.5G1310/1550nm3.3VPIN-TIA-pin-EPigtail   DSMZR13-75x3G1310/1550nm3.3VPIN-TIA-pin-EPigtail   BSMZR13-95x10G1310/1550nm3.3VPIN-TIA-pin-EPigtail   BSM