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269-2

更新时间： 2022-11-25 16:06:38

品牌	Logo	应用领域
杰尔 - AGERE		泵
页数	文件大小	规格书
8页	92K
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69-Type 14xx nm DFB Pump Laser Module

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Data Sheet

June 2001

269-Type 14xx nm DFB Pump Laser Module

Description

The 269-type DFB pump laser module represents a

family of thermoelectrically cooled, high-power

lasers. These devices achieve stable wavelength

performance within the 1420 nm to 1510 nm range,

over the full operating temperature range. They are

designed as continuous-wave (CW) optical pump

sources for dense wavelength-division multiplexing

(DWDM) EDFA and Raman applications operating in

the C- and L-bands.

These new high-power DFB products represent a

breakthrough in 14xx nm pump laser technology by

integrating the beneficial characteristics of an exter-

nal FBG laser design (such as stimulated Brillouin

scattering suppression) with the superior relative-

intensity noise (RIN) performance of a DFB laser.

The combination of both characteristics is critical to

enable copropagating Raman pumping, which dis-

tributes gain over the first few kilometers of the trans-

mission fiber. The typical RIN value Agere Systems’

DFB lasers is –158 dB/Hz, a major improvement over

comparable external FBG-stabilized lasers with a

typical RIN of –125 dB/Hz. Integrating wavelength

stabilization into the chip improves the stabilization

over operating temperature and thereby eliminates

the need for an external FBG .

The 269-type DFB pump laser module is designed as a

continuous-wave (CW) optical pump source for erbium-doped

fiber amplifiers.

Features

■ Low relative intensity noise (RIN)

■ High-coupled rated output power up to 280 mW,

■ Wide environmental range

■ Field-proven packaging technology

■ InGaAsP/InP high-power, strained multiple quan-

tum-well (MQW), distributed-feedback (DFB) laser

chip design

The laser modules incorporate a high-power, quan-

tum-well laser chip that achieves fiber powers up to

280 mW.

■ Internal optical isolator (optional)

■ Internal thermoelectric cooler (TEC)

■ InGaAs PIN photodetector back-facet monitor

An integral thermoelectric cooler (TEC) stabilizes the

laser at room temperature and, combined with a her-

metic environment, allows the device to achieve

high-power operation over the extended temperature

range of 0 °C to 75 °C. An internal InGaAs PIN pho-

todiode, mounted behind the laser diode, functions

as the laser detector and monitors light emissions

from the rear facet of the laser.

■ Single-mode and polarization-maintaining fiber pig-

tails

■ Compact, 14-pin butterfly package

■ Industry compatible package and pinout

The 269-type DFB module is offered in a 14-pin, her-

metic butterfly package.

Applications

■ Raman pump modules (RPM), copropagating and

counterpropagating

■ Erbium-doped fiber amplifiers (EDFA)

12 3 4 5 6 7 8

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