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Part: 1541A
Category:
Description: Wideband DFB Laser Transmitters
Company: Agere Systems
Datasheet: Download 1541A datasheet File size : 144 kB
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Data Sheet June 2001
Wideband DFB Laser Transmitters
Description
The distributed feedback (DFB) laser transmitters provide exceptional performance for linear fiber-optic communications in very wide bandwidth applications. Linear fiber optics developed by Agere Systems Inc. are an excellent alternative to using coaxial cable systems to transmit 10 MHz--18 GHz signals. They offer significant improvements in reliability in wideband communication networks by transmitting the RF signal in its original format. As a result of these proper ties, these wideband DFB laser transmitters provide significant improvements in signal quality for a wide variety of applications, including antenna remoting, timing and reference signal distribution, telemetr y, measurement, and delay lines. Wideband DFB lasers are available in several packaging styles. The basic laser module can be integrated into a complete transmitter, packaged either as a flange-mount for extreme environments or as a plug-in for integration with Agere Systems' System 10000 rack-mountable chassis and power supplies. Electronics within flange-mount and plug-in transmitters control the laser temperature and dc bias current and provide warnings whenever the temperature or power deviates from their intended levels, thus providing a self-regulating, fully integrated wideband product. These units provide high-quality noise performance in sensitive optical links.
Features
s s s s s
High dynamic range Long distance communication 10 MHz to 18 GHz bandwidth Built-in optical isolator, 1310 nm or 1550 nm Y2K compliant, CE certified
Applications
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Antenna remoting Cellular and PCS networks Militar y triband communications TT and C
Wideband DFB Laser Transmitters
Data Sheet June 2001
Absolute Maximum Ratings
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 Temperature Range of Baseplate: Modules and Flange-mount Plug-ins Storage Temperature Range: Modules and Flange-mount Plug-ins RF Input Power: Modules and Flange-mount Plug-ins Symbol TOP 40 40 Tstg 40 20 PIN -- -- 20/60 s 20/60 s dBm dBm 85 65 °C °C 65 65 Min Max Unit °C °C
Characteristics
Specifications describe warranted performance. Typical values, indicated by "typ.," provide expected levels of performance, but are not guaranteed. Table 1. Optical Characteristics1 Package Type Module Flange-mount Transmitter Plug-in Transmitter Parameter Wavelength Spectral Width, FWHM2, Typ., Max. Optical Power: Min. Typ. Optical Power Stability vs. Temperature dc Modulation Gain: Min. (mW/mA) Typ. (mW/mA) 1310 nm ± 30 nm 10 MHz 1310 nm ± 30 nm 10 MHz 1310 nm ± 30 nm 10 MHz 1540A 3540A 10340A 1541A 3541A 10341A 1541B 3541B 10341B Device Code 1541C 3541C 10341C 1310 nm ± 30 nm 10 MHz 1541C-E05 3541C-E05 10341C-E18 1310 nm ± 30 nm 10 MHz 1740A 3740A 10370A 1550 nm ± 30 nm 10 MHz 1741A 3741A 10371A 1550 nm ± 30 nm 10 MHz
Specifications
4 mW 7 mW ± 15%
2.4 mW 5 mW ± 15%
3 mW 6 mW ± 15%
3 mW 6 mW ± 15%
3 mW 6 mW ± 15%
3 mW -- ± 15%
3 mW -- ± 15%
0.10 0.16
0.06 0.12
0.06 0.1
0.06 0.1
0.06 0.1
0.05 --
0.05 --
1. Specifications guaranteed when unit is connected to an optical path with return loss > 35 dB. 2. No RF input.
Table 2. dc Power Requirements for Flange-Mounts and Plug-ins1, 2 Pin No. 1 2 Min 14 V 4.75 V Typ 15 V 5V Max 16 V +5.5 V Max Ripple 100 mVp-p 200 mVp-p Current 0.3 A max 1.5 A max
1. Plug-in products are powered with the 10990A rack-mount chassis and 10901A/B power supply. 2. For laser module dc requirements, contact an Agere Systems' account manager for an OEM data sheet.
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Agere Systems Inc.
Data Sheet June 2001
Wideband DFB Laser Transmitters
Characteristics (continued)
Table 3. RF Parameters1
Package Type Module Flange-mount Tx Plug-in Tx Parameter Maximum Frequency Minimum Frequency Option -001 Amplitude Flatness2 Option -001 Input Impedance Input VSWR Input 1 dB Compression, Typ. Min Input Third Order Intercept4, min.(dBm): 0.01 GHz --2.5 GHz 2.5 GHz--4 GHz 4 GHz--5 GHz 5 GHz--10 GHz 10 GHz--13 GHz 13 GHz--15 GHz 15 GHz--18 GHz Noise Figure5 (dB): 0.01 GHz--1 GHz 1 GHz--2.5 GHz 2.5 GHz--3 GHz 3 GHz--4 GHz 4 GHz--5 GHz 5 GHz--6 GHz 6 GHz--10 GHz 10 GHz--13 GHz 13 GHz--15 GHz 15 GHz--18 GHz RF Connector: Laser Module Flange-mount and Plug-in 5 GHz 0.1 GHz 0.01 GHz ± 2.0 dB ± 3.0 dB 50 1.8 : 1 +13 dBM 10 GHz 0.1 GHz 0.01 GHz ± 2.5 dB ± 3.0 dB 50 1.8 : 1 +13 dBM 13 GHz 0.1 GHz 0.01 GHz ± 3.0 dB ± 3.5 dB 50 3.0 : 1 +20 dBM 1540A 3540A 10340A 1541A 3541A 10341A 1541B 3541B 10341B Device Code 1541C 3541C 10341C 1541C-E05 3541C-E05 10341C-E18 1740A 3740A 10370A 1741A 3741A 10371A
Specifications 15 GHz 0.1 GHz 0.01 GHz ± 3.0 dB ± 3.5 dB 50 3.0 : 1 +20 dBM 18 GHz 0.1 GHz 0.01 GHz ± 3.0 dB3 ± 3.5 dB3 50 3.0 : 1 +20 dBM 4 GHz 0.1 GHz 0.01 GHz ± 2.5 dB ± 3.0 dB 50 1.8 : 1 +13 dBM 10 GHz 0.1 GHz 0.01 GHz ± 2.5 dB ± 3.0 dB 50 1.8 : 1 +13 dBM
30 22 22 -- -- -- -- 44 48 59 59 59 -- -- -- -- -- -- SMA (f) SMA (f)
35 30 25 25 -- -- -- 44 49 49 49 48 49 59 -- -- -- --
35 30 25 25 25 -- -- 44 44 44 49 49 49 54 59 -- -- --
35 30 25 25 25 25 -- 44 44 44 49 49 49 54 59 59 -- --
35 30 25 25 25 25 20 44 44 44 49 49 49 54 59 59 59 --
28 28 23 -- -- -- -- 56 56 56 56 -- -- -- -- -- -- -- SMA (f) SMA (f)
23 23 23 23 -- -- -- 56 56 56 56 56 58 62 -- -- -- --
K-connector (f)6 SMA (f)
K-connector (f)6 SMA (f)
K-connector (f)6 SMA (f)
K-connector (f)6 SMA (f)
K-connector (f)6 SMA (f)
1. Specifications guaranteed when unit is connected to an optical path with return loss > 35 dB. 2. Peak to peak. 3. For 18 GHz applications, 1541C/3541C/10341 are screened, tested and tuned for 18 GHz. This results in 3 dB minimum rolloff from 15 GHz to 18 GHz. 4. Two carrier test. 5. No RF input. 6. K-connector is a trademark of Anritsu Company. K-connectors are SMA compatible.
Agere Systems Inc.
3
Wideband DFB Laser Transmitters
Data Sheet June 2001
Front Panel LEDs
s s s
Pin/Package Information
Table 4. Nine-Pin D-sub Connector (10340A, 10341A/B/C, 10370A, 10371A, and 3540A, 3541A/B/C, 3740A, 3741A Transmitters) Pin 1 2 3 4 5 6 7 8 9
1. Open collector outputs.
Power on Laser power stable Laser temperature stable
Description 15 Vdc 5 Vdc NC Power Ground Ref. Ground Photodiode Current Monitor Low Optical Power Alarm1 Laser Current Monitor Over-temperature Alarm1 Photodiode current, pin 6: 1 V/mA, ± 2% accuracy (into 1 M load). Proportional to laser output power. Laser dc current, pin 8: 1 V/mA, ± 2% accuracy (into 1 M load).
dc Monitor Voltages
Alarm Circuits
The alarms are open-collector outputs capable of sinking 20 mA when active and withstanding 15 V when off. Low optical power, pin 7: sinks current when power is below 90% of setpoint. Laser temperature, pin 9: sinks current when laser internal temperature exceeds 2 °C of setpoint (nominally 20 °C).
Table 5. Seven-Pin Miniature Rectangular Connector (1540A, 1541A/B/C, 1740A, 1741A Transmitters) Pin A B C D E F H Description Thermistor TEC () Thermistor TEC (+) Laser Bias Ground Monitor Photodiode
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Agere Systems Inc.
Data Sheet June 2001
Wideband DFB Laser Transmitters
Outline Drawings
10340A,10341A/B/C, 10370A, 10371A Transmitters (Dimension are in inches and (millimeters).)
FIBER-OPTIC TRASMITTER 9.12 (232)
5.06 (129)
POWER ON LASER POWER LASER TEMP
OPTICAL OUT DANGER RF IN SMA (F)
dc CONNECTOR 9-PIN D-SUB (M)
1-1189(F).b
1540A, 1541A/B/C, 1740A,1741A Transmitters (Dimension are in inches and (millimeters).)
1.53 (39)
K-CONNECTOR
0.49 (12) 0.66 (17)
RF INPUT
FIBER PIGTAIL
1.33 (34)
A
C
E
H 0.42 (11) 0.23 (6)
B
D
F
7-PIN MINIATURE RECTANGULAR
1-1192 (F)a
3540A, 3541A/B/C, 3740A, 3741A Transmitters (Dimension are in inches and (millimeters).)
RF OUT SMA (F) dc CONNECTOR 9-PIN D-SUB (M) Ø.12 (3)
5.00 (127) 4.25 (108) 2.13 (54) 0.38 (10)
5.60 (142) 6.00 (152)
0.20 (5)
OPTICAL IN POWER LASER ON POWER STABLE LASER TEMP STABLE
1.50 (38)
0.12 (3)
1-1191(F)
Agere Systems Inc.
5
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