DATASHEET| AUGUST 6, 2008 Model 755M Optical Transmitter DWDM, up to 20 km, Low Distortion, Wideband Emcore's Model 755M is a directly modulated (DM) DWDM optical transmitter specifically designed for wideband applications that require both CATV and DBS signals to be carried over up to 20 km of fiber. This facilitates networks designs that may use a single transmitter to carry multiple signals. Applications Video signal distribution to HFC CATV and FTTP nodes Supports CATV, QAM, and 1527 DBS signal carriage Replacement for externally modulated transmitters Features Dual redundant power supplies SNMP network interface Dual RF inputs for CATV and DBS Available on 100 GHz spaced ITU DWDM C-band channels Optimized RF integration of predistorter, amplifiers, and laser Complete, efficient laser bias and TEC control circuitry OEM/ODM opportunities available through Emcore RoHS The 755M supports full 79-channel NTSC analog signal and or a combination of QAM, DBS with reduced channel analog CATV. The fiber length the 755M can support is up to 20km. The 755M family of transmitter products is designed to support various CATV transmitter applications with a common platform. A 75 CATV RF video input supports frequencies up to 1002 MHz. Integrated within the transmitter design are Emcore's low chirp control, noise suppression circuitry, and patented predistortion technology to provide outstanding performance with any of Emcore's wide range of cooled broadband lasers. A second 75 RF input supports frequencies up to 2600 MHz for FTTP, L-Band satellite, and wireless applications. Performance Highlights Min Typ Max Units 0 25 50 C 1530 - 1560 nm Optical Power 10 - - dBm Frequency Response (75 CATV Port) 47 - 1002 (75 L-Band Port) 950 - 2600 CNR 51 - - dB CSO - - -60 dBc CTB - - -65 dBc - - -60 dBc - - 18 dBm Operating Temperature Range Wavelength (100 GHz ITU Options) rd C/I (3 order, 950 - 2600 MHz) SBS Suppression Capability (Channel Option 11J & 57J only) MHz Noise and distortion performance above assumes 79 channel NTSC loading with no QAM, 0 dBm received optical power, 20 km SMF-28 fiber or equivalent. See following pages for complete specifications and operating/test conditions. For more information on this and other products: Contact Sales at Emcore 626-293-3400, or visit www.emcore.com. Model 755M Optical Transmitter DATASHEET| AUGUST 6, 2008 Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the transmitter. These are absolute stress ratings only. Functional operation of the device is not implied or guaranteed 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 Symbol Min Max Unit Tstg -40 85 C - - -10 -5 dBm - - +15 dBm AC Input Range VAC 94 250 VAC AC Input Frequency Range fAC 50 60 Hz Power Consumption P - 50 W Storage Temperature (power off) 75 CATV RF Input Level Manual Mode AGC Mode L-Band RF Input Level Optical Characteristics Parameter Condition Optical Output Power - SBS Threshold For RF input option 11J and 57J only Wavelength - Side Mode Suppression Ratio Optical Return Loss 1 Min Typ Max Unit 10 - - dBm - - 18 dBm See table nm - 30 - - dB APC style connector 40 - - dB 1. In order to prevent reflection-induced distortion, the laser must be connected to an optical cable having a return loss of at least 55 dB for discrete reflections and 30 dB for distributed reflections. EMCORE CORPORATION 2 Model 755M Optical Transmitter DATASHEET| AUGUST 6, 2008 RF Characteristics The following specifications are reference at 25C. The test receiver responsivity of 0.95 A/W (at 1550 nm) and an equivalent noise current of 7pA/rt(Hz). Test fiber is single mode, Corning SMF-28 (or equivalent) with 0.25 dB/km maximum loss (at 1550 nm). In order to prevent reflection-induced distortion, the transmitter subassembly must be connected to an optical cable with discrete reflections < -55 dB and distributed reflections < -30 dB. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Top - 0 - 50 C S21-CATV 47MHz - 1002MHz, Peak to Valley - - 1.5 dB S21-TP Relative to 75 Ohm Input -1 - 1 dB S11-CATV 47 MHz - 1002 MHz, 75 16 - - dB S11-TP 47 MHz - 1002 MHz, 75 16 - - dB Pout-TP-CATV Relative to 75 Ohm Input Level -21 -20 -19 dBm CATV RF input power detection range - Note 1 -20 - -9.7 dBm AGC Range - Perform to specification -3 +3 dB L-Band Response Flatness S21-Lband 950MHz - 2600 MHz, Peak to valley - - 3.5 dB L-Band Return Loss S11-LBand 950MHz - 2600 MHz 16 - - dB L-Band Input Level Pin-LBand - -0.5 0 +0.5 dBm F1=2000MHz, F2=2000.5MHz 2-tone @ -3dBm/tone Rx Opt Power = 0dBm CATV Input with Loading specified in CATV 75 Input Option - - -60 dBc Operating Temperature Range CATV Response Flatness Test Port Response Flatness CATV Input Return Loss Test Port Return Loss RF Test Point Level rd L-Band Input C/I (3 Order) 1. Detects RF power of CATV input port only. The total input power is defined in section 3.10 and 3.11. The input RF power detector can handle the input power range between +5 to -10dB range from the nominal input power level. EMCORE CORPORATION 3 Model 755M Optical Transmitter DATASHEET| AUGUST 6, 2008 755M, Noise and Distortion Characteristics for CATV Input CATV 75 Input Option (4) 79ch NTSC 79ch NTSC + 75ch QAM @ -6dB 110ch NTSC (4) 42ch CENELEC 60ch PAL (4) (4) (4) JCTEA: 57ch Analog + 40ch QAM @ -10dB JCTEA: 11ch + 80ch QAM @ -10dB (8) (7) RF Level/ch (dBmV) Composite (dBm) 15 -14.77 - 79ch = 15 75ch QAM = 9 -13.84 10 13.57 -14.77 17.75 BER (5) (1,2) CNR (dB) (1,3,6) CSO (dBc) (1,3,6) CTB (dBc) 51 -60 -65 49 -60 -65 - 48.5 -60 -65 -14.77 - 52 -60 -65 16.2 -14.77 - 52 -60 -65 57ch = 16.2 40ch QAM = 6.2 -14.70 - 46 -60 -65 11ch = 21.2 80ch QAM = 11.2 -14.76 - 46 -60 -65 -7 1. 2. Test with 3m and 20km of SMF28 fiber. CNR may degrade up to 0.5dB over the operating temperature range. 3. 4. 5. 6. 7. CSO and CTB may degrade up to 1.5dB over the temperature range. Test with 0 dBm received optical power. QAM format = 256-QAM, ITU-T J.83 Annex C, Analog channels are modulated. L-band input is injected with 2 tones, F1 = 2000MHz, F2 = 2000.5MHz with -3dBm/tone. Test with EDFA, -6dBm received optical power, QAM format = 64-QAM. 2 tones, F1 = 2000MHz, F2 = 2000.5MHz, applied to L-Band port with -3dB/tone. 18dBm launch power. Test with EDFA, -8dBm received optical power, QAM format = 64-QAM. 2 tones, F1 = 2000MHz, F2 = 2000.5MHz, applied to L-Band port with -3dB/tone. 18dBm launch power. 8. EMCORE CORPORATION 4 Model 755M Optical Transmitter DATASHEET| AUGUST 6, 2008 Package Characteristics Parameter Dimension Unit Height 1.75 (44), 1RU Inch (mm) Width 19 (483) Inch (mm) Depth 17.77 (452) with fans Inch (mm) Weight 9.0 (4) EMCORE CORPORATION Pounds (kg) 5 Model 755M Optical Transmitter DATASHEET| AUGUST 6, 2008 ITU Channel Numbering Channel 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 Wavelength (nm) 1527.99 1528.77 1529.55 1530.33 1531.12 1531.90 1532.68 1533.47 1534.25 1535.04 1535.82 1536.61 1537.40 1538.19 1538.98 Channel 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 Wavelength (nm) 1539.77 1540.56 1541.35 1542.14 1542.94 1543.73 1544.53 1545.32 1546.12 1546.92 1547.72 1548.51 1549.32 1550.12 1550.92 EMCORE CORPORATION Channel 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 Wavelength (nm) 1551.72 1552.52 1553.33 1554.13 1554.94 1555.75 1556.56 1557.36 1558.17 1558.98 1559.79 1560.61 1561.42 1562.23 1563.05 6 Model 755M Optical Transmitter DATASHEET| AUGUST 6, 2008 Outline Drawing Dimensions are in inches. EMCORE CORPORATION 7 Model 755M Optical Transmitter DATASHEET| AUGUST 6, 2008 Laser Safety Information This product meets the appropriate standard in Title 21 of the Code of Federal Regulations (CFR). FDA/CDRH Class IIIb laser product. A supplemental FDA application has been filed and it is anticipated that the accession number for this product will be 0220309 since this accession number is from a similar product family. Single-mode fiber pigtail with SC/APC connectors (standard). Wavelength = 1.5 m. Maximum power = 30 mW. Caution: Use of controls, adjustments and procedures other than those specified herein may result in hazardous laser radiation exposure. EMCORE CORPORATION 8 Model 755M Optical Transmitter DATASHEET| AUGUST 6, 2008 Ordering Information - Model Number Options 755M-vv-www-xxx-yy-zz Model Version 755M, ECL laser Fiber Length vv = 20, 0 to 20km Channel Plan www = 079, 79ch NTSC www = 79Q, 79ch NTSC + 75ch QAM-256 format www = 110, 110ch NTSC www = 042, 42ch CENELEC www = 060, 60ch PAL www = 11J, JCTEA, 11ch Analog + 80ch QAM-64 format www = 57J, JCTEA, 57ch Analog + 40ch QAM-64 format Input Option xxx = C75, CATV Input only, 75 xxx = L75, CATV Input + L-Band, 75 ITU Grid Wavelength zz = 00, Non ITU grid zz = 18 to 62, ITU grid Optical Connector zz = FA, FC/APC zz = SA, SC/APC zz = E2, E2000/APC Example 755M-20-079-L75-18-SA: 755MM-M, ECL, 20km, 79 channel NTSC, CATV + 75 L-Band input, ITU channel 18, SC/APC optical connector. Information contained herein is deemed to be reliable and accurate as of issue date. EMCORE reserves the right to change the design or specifications of the product at any time without notice. EMCORE and the EMCORE logo are trademarks of EMCORE Corporation. EMCORE CORPORATION 755M Datasheet 08-06-2008 2015 West Chestnut Street Alhambra, California 91803-1542 Tel: 626-293-3400 EMCORE CORPORATION Fax: 626-293-3428 www.emcore.com 9 Copyright 2008. EMCORE Corporation