a8e re AdLib systems OCR Evaluation Data Sheet August 2002 10 Gbits/s Lithium Niobate Electro-Optic Modulator Features " Ti-diffusion process " Single-drive technology " C- and L-band models " Slim, hermetic package " Bandwidths up to 10 GHz " 0.7 chirp operation " Operational over a temperature range of 0 C to 70 C " 43 0 design for minimal electrical reflections " Angled interfaces for minimal optical reflections The Lithium Niobate Modulators include three single-drive modulators (2623N, 2623Y, 2623CS) and a single-drive modulafor with an integrated attenuator (2623CSA) . All devices are capable of modulation rates up to 10 Gbits/s . " Integrated optical attenuator available on 10 Gbits/s modulator (2623CSA) " Tested to Te1COrd18 Technologies T"^ 468 Benefits " Excellent long-term bias stability " Internal polarizer " Low modulation voltages Applications " Digital high-speed telecommunications : - SONET. OC-1 through OCA 92 - SDH : STMA6, STM-64 - Undersea communications " Internet data communications " SONET/SDH test equipment AdLib OCR Evaluation Data Sheet August 2002 10 Gbits/s Lithium Niobate Electro-Optic Modulator 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 timevarying 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 do bias voltage . The package is hermetic to protect the LiNb03 die from the environment. Novel processing techniques now make it possible to achieve 20-year operation with little drift in the do 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 at 1 .5 gm RF Voltage (peak to peak) do Voltage (RF input) do Voltage (Attenuator input) Operating Temperature 2 Symbol Min Max Unit Tst9 PIN -40 - 85 30 C mW VRF VdCRF Vdcarr Top -20 -25 0 10 20 25 70 V V V C Agere Systems Inc. AdLib OCR Evaluation Data Sheet August 2002 10 Gbits/s Lithium Niobate Electro-Optic Modulator Optical/Electrical Characteristics Table 1 . Optical/Electrical Characteristics Parameter Operating Wavelength : C-band L-band Insertion Loss: 2623N, 2623Y 2623CS 2623CSA Extinction Ratio at do Extinction Ratio at RF S11 Optical Return Loss Bandwidth* Drive Voltage (VTc) at do Drive Voltage (VTc) at 1 GHz Attenuation Voltage at-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) I Min Typ Max Unit 1525 1565 - 1565 1620 nm nm 3 3.5 20 12 8 2.8 3.5 15 - 3.7 4.5 27 10 3.1 4.1 19 43 -15 -14 -8 5.5 6.5 -35 4.0 5.0 22 -13 -12 -6 dB dB dB dB dB GHz V V V 0 dB dB dB I I I " 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 . do BIAS CONTROLLER SEE NOTE . ' I I SPEED DATA INPUT MODULATOR DRIVER ~I BIAS TEE I I 10 -~f ATTENUATION CONTROLLER I I PMF I I I I - - - - CW-LASER PHOTODETECTOR/ PREAMP - - - - 2623N,2623Y,2623CS,2623GSA Note : Circuitry in dotted lines is used only with the 2623CSA. SPUTTER 1-1062 (F) Figure 1. Recommended Operating Circuit Diagram tEE2623N,2623Y,2623CS t~0.2 wF _ -10 pF 2623CSA Figure 2. Equivalent Circuit Diagram Agere Systems Inc. 1-1063 (F) 3 AdLib OCR Evaluation Data Sheet August 2002 10 Gbits/s Lithium Niobate Electro-Optic Modulator 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 ./Ib. of torque when making connections to these inputs . High-frequency coaxial cable is recommended . Characteristic Curves CH1 E/O W/A LOG MAG dB/ REF -55 .48 dB 1 : -55 .846 dB 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 dBe COR AVG 4 v SMA HID v 2 -10 m v H -20 w 3 w 0 4 O d O a J Q -30 O -40 U H d -501 I -20 START .130 000 000 GHz STOP 20 .000 000 000 GHz 1-1058(F) FREQUENCY LOG MAG dBe COR v HID O 0- 20 1-1060(F) 0 -10 m w -20 a -30 <Y w 10 Figure 5. Output Power vs. Bias Voltage 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 0 MODULATOR do BIAS VOLTAGE (V) Figure 3. Magnitude of Electro-Optic Response, 0.130 GHz-20 GHz . CH1 S11 -10 J Q 4 1 2 U a -40 O 3 1, V1 -50 START .130 000 000 GHz STOP 20 .000 000 000 GHz FREQUENCY Figure 4. S11, 0.130 GHz-20 GHz 1-1059(F) -60 1 1 1 1 1 1 1 1 -40 -30 -20 -10 1 0 1 1 1 1 1 1 1 J 10 30 40 20 ATTENUATOR BIAS VOLTAGE (V) START = -23 .98 V STOP = 25 .58 V 1-1061 (F) Figure 6. Optical Power vs. Attenuator Bias Voltage Agere Systems Inc. AdLib OCR Evaluation Data Sheet August 2002 10 Gbits/s Lithium Niobate Electro-Optic Modulator Outline Diagrams Dimensions are in inches and (millimeters) . 2623N, 2623Y, 2623CS Lithium Niobate Modulators SMA SHORTING 1 .20 (30 .5) FIELD-REPLACEABLE SMA CONNECTOR - 0 .20(5 .1) - INPUT Agere IA06686 96I Electro-Optic Modulator M Sode I /N 2O 0 .14 (3 .6) BEND LIMITER 2 PLACES FC/PC CONNECTOR OPTIONAL 2 PLACES 1 .5 METER MAXIMUM LOOSE-TUBE JACKETED FIBER 2 PLACES 4 .64 (117 .9) " 2623N S/N XXXX A0668698 0 .60 (15 .2) 014097001 0 .39 t 0 .20 (5 .11) (9 .8) 0 .32(8 .1) - 4 .00 (101 .6) 2 .00 (50 .8) 0 .09 (2 .2) -1 #4-40 UNC 2B 0 .12 (3 .05) DEEP MIN, 6 PLACES F_ I i 0 .43 (10 .8) 1 .53 L (38.9) 1-1064(F)a Agere Systems Inc . AdLib OCR Evaluation Data Sheet August 2002 10 Gbits/s Lithium Niobate Electro-Optic Modulator Outline Diagrams (continued) 2623CSA Lithium Niobate Modulator ATTENUATOR PIN # 1 SMA SHORTING CAP ATTENUATOR PIN # 2 FIELD-REPLACEABLE SMA CONNECTOR 1 .20 (30 .5) 0 .20(5 .1) - INPUT Agere Aossas sa Electro-Optic Modulator Model 2623CSA S/N Xxxx i O \ 0 .14 (3 .6) BEND LIMITER 2 PLACES FC/PC CONNECTOR OPTIONAL 2 PLACES 1 .5 METER MAXIMUM LOOSE-TUBE --w JACKETED FIBE 2 PLACE 4 .64 (117 .9) I 0 .32 (8.1) 2623CSA S/N XXXX A0668698 014097001 " 4 .00 (101 .6) 2 .00 (50 .8) 0 .09 (2 .2) -1 I I 0 .60 (15 .2) R I IS 0]CRO 0 .20 .39 (5.11) (9 .8) #4-40 UNC 2B 0 .12 (3 .05) DEEP MIN, 6 PLACES F I 0.43 (10 .8) 1 .53 L (38 .9) 1-1064Fc 6 Agere Systems Inc. AdLib OCR Evaluation Data Sheet August 2002 10 Gbits/s Lithium Niobate Electro-Optic Modulator Package Information Designed to NEBS (inside plant) standards, the hermetic package design incorporates a laser-sealed lid and soldered fibers. The minimum bend radius for the fiber is 1 .5 in. To prevent warping, use only the two center screws to mount the device . Table 2. Package Information Description Type Input Optical Fiber (all codes) Output Optical Fiber: 2623N, 2623Y 2623CS 2623CSA Fiber Connector Fiber Length RF Connector Package Dimensions PANDA-type PMF PANDA-type PMF Standard single-mode FC 1 .5 m max SMA See Outline Drawings, page 5, 6. I Ordering Information Table 3. Device Information Part Number 2623N 2623Y 2623CS 2623CSA I Agere Systems Inc . Minimum Bandwidth (GHz) 8 9 10 8 I Attenuator C-Band L-Band Comcode No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes 1077393100 108864604 107862823 108433954 I I I 7 AdLib OCR Evaluation Telcordia Technologies is a trademark of Telcordia Technologies, Inc. For additional information, contact your Agere Systems Account Manager or the following: INTERNET: http ://www.agere .com E-MAIL: docmaster@agere.com N. AMERICA: Agere Systems Inc ., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA : Agere Systems Hong Kong Ltd., Suites 3201 & 3210-12, 32/F, Tower 2, The Gateway, Harbour City, Kowloon Tel. (852) 3129-2000, FAX (852) 3129-2020 CHINA: (86) 21-5047-1212 (Shanghai), (86) 755-25881122 (Shenzhen) JAPAN: (81) 3-5421-1600 (Tokyo), KOREA: (82) 2-767-1850 (Seoul), SINGAPORE: (65) 6778-8833, TAIWAN : (886) 2-2725-5858 (Taipei) EUROPE: Tel. (44) 7000 624624, FAX (44) 1344 488 045 Agere Systems Inc . reserves the right to make changes to the product(s) or information contained herein without notice . No liability is assumed as a result of their use or application . Agere, Agere Systems, and the Agere logo are trademarks of Agere Systems Inc. Copyright (c) 2002 Agere Systems Inc . All Rights Reserved August 2002 DS02-350OCN (Replaces DS00-331 OPTO-2) a 'ere s 8 y tems s