1250-1650 nm; Responsivity 25 A/W; Breakdown Voltage 40-70 V; Dark Current 1 nA; Package 3-pin TO 46 Wooriro’s APD module for OTDR applications is based on an InGaAs/InP avalanche photodiode (APD) in TO-46 package. This module’s APD is pigtailed, and the module can be ordered either without connector or with a SC, LC or FC type optical connector in UPC or APC version. Designed for an optical wavelength range of 1250 nm to 1650 nm, the APD module for OTDR features a very low dark current of 1 nA typical at 98% breakdown voltage. Typical responsivity is 25 A/W at 1550 nm wavelength and 10 nW optical input power. Key Features: InGaAs/InP Avalanche Photodiode APD Low Dark Current: 1 nA (Typical, @0.98 x Breakdown Voltage) High Reliability Optical Wavelength Range: 1250 nm to 1650 nm Responsivity: 25 A/W Typ. (VAPD = 0.98 VBR, λ = 1550 nm, Pin = 10 nW) Breakdown Voltage VBR: 40 V to 70 V (Id = 10 µA) Temperature Coefficient of VBR: 90 mV/°C (-40 °C to +85 °C) Dimensions: Ø 6 mm x Length 20.2 mm Applications: OTDR; Optical Sensor; Optical Test Instruments

Integrated TIA With Burst Mode; 1260-1640 nm; Responsivity 10.5 A/W; Breakdown Voltage 23-31 V; Dark Current 500 nA; Package 6-pin TO 46 Wooriro’s avalanche photodiode (APD) with burst-mode TIA is packaged in a 6-pin TO-46 case with aspherical lens cap. The APD’s integrated transimpedance amplifier (TIA) can be operated in a burst mode that lifts the input data rate from 1.25 Gb/s continuous to 10.3125 Gb/s burst. Users can control the burst mode via a logic signal connected to pin 5 of the APD’s TO-46 case. Designed for an optical wavelength range of 1260 nm to 1640 nm, the APD with burst-mode TIA features a dark current of 500 nA typical at 98% breakdown voltage. Typical responsivity is 10.5 A/W at 1310 nm wavelength and 50 µW optical input power. Key Features: Integrated Transimpedance Amplifier (TIA) Burst Mode for 10 Gb/s Standard TO-46 Package With Aspherical Lens Cap Optical Wavelength Range: 1260 nm to 1640 nm Responsivity: 10.5 A/W Typ. (λ = 1310 nm, Pin = 50 µW, VAPD = 0.95 VBR) TIA Supply Voltage: 3.3 V (2.97 V to 3.63 V) TIA Supply Current: 40 mA Typ. Transimpedance: 2 kΩ Typ. (Differential, 50 Ω on Each Output) APD Breakdown Voltage VBR: 23 V to 31 V Temperature Coefficient of VBR: 20 mV/°C (-40 °C to +85 °C) APD Dark Current: 500 nA (Typical, @0.9 x Breakdown Voltage) Sensitivity: -32 dBm Typ. (CM @Continuous Mode 10.3125 Gb/s NRZ, PRBS = 231 – 1, BER = 1E-3, ER = 5.97 dB, λ = 1310 nm) Dimensions: Ø 4.67 mm x Length 3.38 mm Applications: IEEE 802.3av 10G 10G-EPON OLT

1100-1600 nm; Responsivity 0.8 A/W; Capacitance 0.25 pF; Dark Current 0.1 nA; Package 3-pin TO 46, 6-pin TO-8, 10-pin Mini-Flat Wooriro’s SPAD series (Single Photon Avalanche Diode) comprises InGaAs/InP APD devices specially designed and fabricated for the use of single photon avalanche detection (SPAD) with internal or external cooling systems. SPAD avalanche photodiodes (APDs) can be operated at the voltage above breakdown for short periods, this mode of operation is called “Geiger mode” or “Gated mode” operation. Ultra-low noise operation is possible at a case temperature of -40 °C. The devices can be used for quantum key distribution (QKD) receivers. SPAD devices are available without an integrated thermoelectric cooling device (TEC) in a 3-pin TO-46 package or with integrated TEC in a 6-pin TO-8 package as well as in a butterfly-style 10-pin Mini-Flat package. Key Features: Low Capacitance: <0.3 pF High Speed Optical Wavelength Range: 1100 nm to 1600 nm Coaxial Type Pigtail Low Noise Breakdown Voltage VBR: 50 V to 90 V (ID = 100 µA) Total Dark Current: 0.1 nA Typ. Capacitance: 0.25 pF Typ. Quantum Efficiency: 70% Typ. Responsivity: 0.8 A/W Typ. (1550 nm, M=1) Cooling System: External or Built-in 3-stage TEC Temperature Coefficient of VBR: 0.11 V/°C Typ. Max. AfterPulse Probability: 10% Dark Count Rate: 2.0 kHz (Standard), 0.5 kHz (Premium Grade) (10 MHz Gate Frequency, 2 ns Gate Pulse, 20% PDE) Detection Efficiency (PDE): 20% Typ. (10 MHz Gate Frequency, 2 ns Gate Pulse) Package: 3-pin TO 46, 6-pin TO-8, 10-pin Butterfly-Type Mini-Flat Applications: Special Applications Requiring Single Photon Counting such as QKD , OTDR, etc.