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参数资料
| 型号： | D2587P18 |
| 英文描述： | TOUCHSCREEN 12.1 USB |
| 中文描述： | 波长选择高功率D2587P型（与波长锁定）/ D2547P型隔离DFB激光器模块 |
| 文件页数： | 7/14页 |
| 文件大小： | 122K |
| 代理商： | D2587P18 |
Wavelength-Selected, High-Power D2587P-Type (with Wavelength
Data Sheet, Rev. 2
Locker)/D2547P-Type Isolated DFB Laser Modules
July 2001
2
Agere Systems Inc.
Description (continued)
Principles of Operation (Controlled Wave-
length)
The single-channel, wavelength-selected DFB (ILM) pack-
age contains internal wavelength-discriminating optics, i.e.,
two etalons and associated photodiodes. The output con-
sists of analog signals suitable for controlling the electrical
current of the thermoelectric cooler (TEC) and the DFB
laser.
Controlled Feedback
The module contains an internal optical isolator that sup-
presses optical feedback in laser-based, fiber-optic sys-
tems. Light reflected back to the laser is attenuated a
minimum of 30 dB.
Controlled Temperature
An integral TEC provides stable thermal characteristics.
The TEC allows for heating and cooling of the laser chip to
maintain a temperature of 25 °C for case temperatures from
–25 °C to +70 °C. The laser temperature is monitored by
the internal thermistor, which can be used with external cir-
cuitry to control the laser chip temperature.
Controlled Power
An internal, InGaAs, PIN photodiode functions as the back-
facet monitor. The photodiode monitors emission from the
rear facet of the laser and, when used in conjunction with
control circuitry, can control optical power launched into the
fiber. Normally, this configuration is used in a feedback
arrangement to maintain consistent laser output power.
Standard Package
The laser module is fabricated in a 14-pin, hermetic, metal/
ceramic butterfly package that incorporates a bias tee that
separates the dc-bias path from the RF input. The RF input
has a nominal 25
impedance.
The laser module is equipped with
Fujikura* polarization-
maintaining fiber (PMF). The fiber is PANDA type and is the
same fiber that is used on the Agere Systems Inc. lithium
niobate modulators. It has a mode field diameter of
10.5
m, a cladding diameter of 125 m ±3 m, and a
loose tube jacketed fiber 900
m in diameter. Figure 1
shows the orientation of polarization in the fiber.
Agere Systems’ optoelectronic components are being qual-
ified to rigorous internal standards that are consistent with
Telcordia Technologies TR-NWT-000468. All design and
manufacturing operations are
ISO § 9001 certified. The
module is being fully qualified for central office applications.
*
Fujikura is a registered trademark of Fujikura Ltd.
Telcordia Technologies is a trademark of Telcordia Technologies
Inc.
§
ISO is a registered trademark of The International Organization for
Standardization.
Figure 1. Polarization-Maintaining Fiber
Pin Information
1. A positive current through the thermoelectric heat pump cools the
laser.
2. Both leads should be grounded for optimum performance.
Table 1. Pin Descriptions
Pin
D2587P-Type
D2547P-Type
1
Thermistor
2
Thermistor
3
Laser dc Bias
(Cathode) (–)
Laser dc Bias
(Cathode) (–)
4
Back-facet Monitor
Anode (–)
Back-facet Monitor
Anode (–)
5
Back-facet Monitor
Cathode (+)
Back-facet Monitor
Cathode (+)
6TEC (+)1
TEC (+)1
7TEC (–)1
TEC (–)1
8
Case Ground
9
λ Photodiode 2 Anode
Case Ground
10
λ Photodiode 1 Anode
Case Ground
11
Laser Anode (+) 2
12
RF Laser Input
Cathode (–)
RF Laser Input
Cathode (–)
13
Laser Anode (+) 2
14
NC
Case Ground
CORE
STRESS ROD
PRINCIPLE POLARIZATION
AXIS
CLADDING
INNER COATING
OUTER COATING
(SILICON & ACRYLATE)
1-771(C).a
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相关代理商/技术参数 |
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| D2587P185 | 制造商:AGERE 制造商全称:AGERE 功能描述:Wavelength-Selected High-Power D2587P-Type (with Wavelength Locker)/D2547P-Type Isolated DFB Laser Modules |
| D2587P19 | 制造商:AGERE 制造商全称:AGERE 功能描述:Wavelength-Selected High-Power D2587P-Type (with Wavelength Locker)/D2547P-Type Isolated DFB Laser Modules |
| D2587P195 | 制造商:AGERE 制造商全称:AGERE 功能描述:Wavelength-Selected High-Power D2587P-Type (with Wavelength Locker)/D2547P-Type Isolated DFB Laser Modules |
| D2587P20 | 制造商:AGERE 制造商全称:AGERE 功能描述:Wavelength-Selected High-Power D2587P-Type (with Wavelength Locker)/D2547P-Type Isolated DFB Laser Modules |
| D2587P205 | 制造商:AGERE 制造商全称:AGERE 功能描述:Wavelength-Selected High-Power D2587P-Type (with Wavelength Locker)/D2547P-Type Isolated DFB Laser Modules |
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