1738U Datasheet

Small Form-factor Erbium-doped Fiber Amplifier With Uncooled Pump


Features, Applications

1738U-Type Small Form-Factor Erbium-Doped Fiber Amplifier with Uncooled Pump
Single-channel links in: Metro systems Long-haul transport Switch matrix

The 1738U-Type Uncooled Small Form-Factor Erbium-Doped Fiber Amplifier (SFF EDFA) is designed for single-channel amplification in C-band applications. The device is manufactured in an economical SFF package and exhibits extremely low power dissipation over a wide operating temperature range. Optimum performance and system stability are supported through the use of optical isolation at the input and output. Optical input and output functions are achieved through single-mode fiber pigtails terminated with optical connectors. The EDFA incorporates an optical input tap and monitor photodiode.

Compact size and extremely low power consumption make the 1738U-Type EDFA an ideal solution for single-channel, preamplification applications in C-band.


Economical, compact package: 12 mm Extremely low power consumption: <875 mW Single-channel amplification in C-band (1528 nm--1562 nm) Uncooled 980 nm pump laser module Wide operating temperature range: +70 �C Optical input tap Isolated input and output Connectorized single-mode fiber pigtail

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Operating Case Temperature Range Storage Case Temperature Range Laser Forward Current Laser Reverse Voltage Symbol TOP Tstg IF VR Min �5 �40 Max Unit mA V

Table 1. Optical/Electrical Characteristics Parameter Wavelength Range Optical Output Power Optical Input Power Noise Figure Symbol POUT PIN NF Conditions PIN = �30 dBm to �8 dBm PIN = �30 dBm PIN = �20 dBm PIN = �15 dBm PIN = �8 dBm PIN = �30 dBm, POUT = �5 dBm PIN = �30 dBm, POUT = �5 dBm, 1562 nm PIN = �30 dBm Min �5 �30 Max Unit nm dBm V mW dBm

Operating Laser Forward Current Operating Laser Forward Voltage Power Consumption ASE Noise Power at Optical Input Port Output Leakage Pump Power

Reverse Isolation Input Monitor Tap Responsivity Polarization Sensitivity Polarization Mode Dispersion Optical Input Return Loss Optical Output Return Loss

Table 2. Pin Descriptions Pin Description Ground Monitor Photodiode Input Monitor Photodiode Cathode Input Monitor Photodiode Anode Not Connected Not Connected Thermistor 1 LD+ (pump anode) LD+ (pump anode) Pump Monitor Photodiode Cathode Pump Monitor Photodiode Anode Pin Description Not Connected Not Connected Not Connected Not Connected Not Connected Not Connected Ground Pump Thermistor 2 LD� (pump cathode) LD� (pump cathode)



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