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Details, datasheet, quote on part number:2623CS/CSA/N/Y
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Datasheet text preview:
Data Sheet May 2001
10 Gbits/s Lithium Niobate Electro-Optic Modulator
Features
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Ti-diffusion process Single-drive technology C- and L-band models Slim, hermetic package Bandwidths up to 10 GHz Operational over a temperature range of 0 °C to 70 °C 43 design for minimal electrical reflections Angled interfaces for minimal optical reflections Integrated optical attenuator available on 10 Gbits/s modulator (2623CSA) Tested to Telcordia Technologies * 468
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The Lithium Niobate Modulators include three single-drive modulators (2623N, 2623Y, 2623CS) and a single-drive modulator with an integrated attenuator (2623CSA). All devices are capable of modulation rates up to 10 Gbits/s.
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Benefits
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Excellent long-term bias stability Internal polarizer Low modulation voltages
Applications
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Digital high-speed telecommunications: -- SONET: OC-1 through OC-192 -- SDH: STM-16, STM-64 -- Undersea communications Internet data communications SONET/SDH test equipment
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* Telcordia Technologies is a trademark of Telcordia Technologies, Inc.
10 Gbits/s Lithium Niobate Electro-Optic Modulator
Data Sheet May 2001
Description
The 10 Gbits/s Electro-Optic Modulator is designed for long-wavelength, single-mode external amplitude modulation applications. It uses an integrated MachZehnder configuration to convert single polarization CW light from a semiconductor (DFB) laser into a timevar ying optical output signal. Agere Systems Inc. also offers a 10 mW CW laser with polarization-maintaining fiber (D2525P) to use as a source for the modulator. The Ti-diffusion process is a standard feature on all modulator devices. The 2623N, 2623Y, and 2623CS are single-drive, 10 Gbits/s modulators; the 2623CSA
is a single-drive, 10 Gbits/s modulator with an attenuating section. Variable attenuation to >19 dB is achieved through a dc bias voltage. The package is hermetic to protect the LiNbO3 die from the environment. Novel processing techniques now make it possible to achieve 20-year operation with little drift in the dc bias point. The modulator is tested to, and meets the intent of TR-NWT-00468. Other standard features include PANDA-type polarization-maintaining fiber (PMF) for the optical input (all codes) and output (2623N, 2623Y, and 2623C) fiber with FC-type connectors that are keyed to the axis of polarization. Custom designs are available.
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 Storage Temperature Optical Input Power @ 1.5 µm RF Voltage (peak to peak) dc Voltage (RF input) dc Voltage (Attenuator input) Operating Temperature Symbol Tstg PIN V RF VdcRF VdcATT TOP M in 40 --
--
Ma x 85 30 10 20 25 70
Unit °C mW V V V °C
20 25 0
2
Agere Systems Inc.
Data Sheet May 2001
10 Gbits/s Lithium Niobate Electro-Optic Modulator
Optical/Electrical Characteristics
Table 1. Optical/Electrical Characteristics Parameter Operating Wavelength: C-band L-band Inser tion Loss: 2623N, 2623Y, 2623CS 2623CSA Extinction Ratio @ dc Extinction Ratio @ RF S11 Optical Return Loss Bandwidth* Drive Voltage (V) @ dc Drive Voltage (V) @ 1 GHz Attenuation Voltage @ 19 dB Electrode Impedance S11 Electrical Return Loss (0.13 GHz--5 GHz) S11 Electrical Return Loss (5 GHz--10 GHz) S11 Electrical Return Loss (10 GHz--18 GHz) Min 1525 1565 3 3.5 20 -- -- 8 2.8 3.5 15 -- -- -- Typ -- -- 3.7 4.5 27 13 -- 10 3.1 4.1 19 43 15 14 8 Max 1565 1620 5.5 6.5 -- -- 35 -- 4.0 5.0 22 -- 13 12 6 Unit nm nm dB dB dB dB dB GHz V V V dB dB dB
* Bandwidth stated is electrical-optical-electrical as determined by the ratio of the received RF electrical power (at a photodiode) relative to the RF electrical power used to drive the modulator. This response is referenced to the value at 130 MHz.
dc BIAS CONTROLLER
SEE NOTE. PHOTODETECTOR/ PREAMP HIGHSPEED DATA INPUT MODULATOR DRIVER BIAS TEE dc ATTENUATION CONTROLLER
PMF CW-LASER 2623N, 2623Y, 2623CS, 2623CSA
SPLITTER
Note: Circuitry in dotted lines is used only with the 2623CSA.
1-1062 (F)
Figure 1. Recommended Operating Circuit Diagram
43
0.2 µF
2623N, 2623Y, 2623CS
43
0.2 µF 10 pF 2623CSA
Figure 2. Equivalent Circuit Diagram Agere Systems Inc.
1-1063 (F)
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10 Gbits/s Lithium Niobate Electro-Optic Modulator
Data Sheet May 2001
Optical/Electrical Characteristics (continued)
Electrical Signal Input
Electrical signal input is made through SMA coaxial connectors. The standard device includes an internal termination network. Care must be taken not to exceed the recommended 8 in./lb. of torque when making connections to these inputs. High-frequency coaxial cable is recommended.
Characteristic Curves
CH1 E/O W/A dBe COR 1 AVG 4 SMA 2 HID 3 4 LOG MAG dB/ REF 55.48 dB 1: 55.846 dB 3 1. 130 000 000 GHz 2. 55.476 dB 0.9248 GHz 3. 58.476 dB 9.9690 GHz 4. 61.766 dB 18.76 48 GHz 0
OPTICAL POWER OUT (dB)
10
POWER (3dB/div)
20
30
40
50 START .130 000 000 GHz STOP 20.000 000 000 GHz FREQUENCY
1-1058(F)
20
10
0
10
20
1-1060(F)
MODULATOR dc BIAS VOLTAGE (V)
Figure 3. Magnitude of Electro-Optic Response, 0.130 GHz--20 GHz. .
C H 1 S11 LOG MAG 5 dB/ REF 0 dB 1: 18.896 dB 1. 924 000 000 GHz 2. 15.278 dB 3.7006 GHz 3. 16.27 dB 5.0975 GHz 4. 8.7734 dB 14.7344 GHz
Figure 5. Output Power vs. Bias Voltage
0 10 OPTICAL POWER (dB)
dBe COR POWER (3 dB/div)
20
HID 4 1 2 3
30
40
50 60 START .130 000 000 GHz STOP 20.000 000 000 GHz FREQUE NCY
1-1059(F)
40 30
20
10
0
10
20
30
40
1-898 (C)
ATTENUATOR BIAS VOLTAGE (V) START = 23.98 V STOP = 25.58 V
1-1061(F)
Figure 4. S11, 0.130 GHz--20 GHz
Figure 6. Optical Power vs. Attenuator Bias Voltage
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Agere Systems Inc.
Data Sheet May 2001
10 Gbits/s Lithium Niobate Electro-Optic Modulator
Outline Diagrams
Dimensions are in inches and (millimeters).
2623N, 2623Y, 2623CS Lithium Niobate Modulators
SMA SHORTING CAP FIELD-REPLACEABLE SMA CONNECTOR INPUT
A06686 98
1.20 (30.5) 0.20 (5.1)
Agere
Electro-Optic Modulator
M odel S/N
2623N XXXX
0.14 (3.6)
BEND LIMITER 2 PLACES FC/PC CONNECTOR OPTIONAL 2 PLACES
4.64 (117.9)
1.5 METER MA XI MUM LOOSE-TUBE JACKETED FIBER 2 PLACES 01409700 1
0.60 (15.2)
2623N S/N XXXX A0668698
0.39 (9.8)
0.20 (5.11)
0.32 (8.1)
4.00 (101.6) 2.00 (50.8)
#4-40 UNC 2B 0.12 (3.05) DEEP MIN, 6 PLACES
0.09 (2.2)
0.43 (10.8) 1.53 (38.9)
1-1064(F)a
Agere Systems Inc..
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