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Model Number:	E2560 Series
Brand Name:	Cyoptics

Specifications

Product Specifications/Features

the E2560-series EML is designed for 10 GB/s  or TDM transmission applications. the EML integrates a CW laser with an electro-absorptive modulator in the same semiconductor chip and are an extension of CyOptics' existing E2500-series of devices. these devices can replace external modulators that are often bulkier, more expensive, and require more drive electronics than the EML. The E2560 series use a small-profile GPO? (SMP) connector to handle the RF signal. The package also contains a thermoelectric cooler, thermistor, rear-facet monitor photodiode, and an optical isolator.E2560S34 - 1

the nominal input impedance of the E2560 version is 50Ohms. the package is qualified to the Telcordia Technologies? TA-TSY-000468 standard.

E2560 is available in a range of ITU-T C-band wavelengths for use in DWDM systems operating at 10 GB/s per channel. Also, E2560-series is offered as a single-channel device operating within a wavelength range of 1530 nm—1563 nm (Note: E2560S34 is at wavelength of 1550.12nm)

the devices exhibit excellent wavelength stability, supporting operation at 100 GHz channel spacing over 20 years (assuming an end-of-life aging condition of <?100 pm). Typically, no external wavelength stabilization is required in systems of this type, using the CyOptics E2560 EMLs. the package also offers excellent stability of wavelength vs. Case temperature, with a maximum coefficient of ±0.5 pm/C.

Module Characteristics

Features

Integrated electro-absorptive modulator
1.5um wavelength
High Output Power
Specified for 9.95 GB/s operation
for use up to 40 km (800ps/nm)
Low modulation voltage
Temperature stabilized
Wavelength selectable to ITU-T standards
Ultra-stable wavelength aging for DWDM
Applications

SONET/SDH applications
Ultrahigh capacity WDM system application
High-speed data communication
Digitized video
Module Characteristics

Table 1. Module Characteristics

Parameter Description
Package Type 7-pin package with GPOTM-type connector RF input.
Fiber Standard single-mode fiber.
Optical Connector Various connectors available on request.
RF Input (SMP-type connector) Impedance 50 W
Bit Rate up to10 GB/s.
E2560 Series - Dimension

Pin Information

Table 2. Pin Descriptions

Pin Number Pin Name Description
1 THERM Thermistor
2 THERM Thermistor
3 LASER+ Laser anode*
4 BACK DET– Monitor anode (–)
5 BACK DET+ Monitor cathode (+)
6 TEC+ Thermoelectric cooler (+)
7 TEC– Thermoelectric cooler (–)
* Laser cathode and modulator ground are connected to case.

Target Specifications

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.

Table 3. Absolute Maximum Ratings

Parameter Conditions Min Max Unit
Laser Diode Reverse Voltage CW — 2 V
Laser Diode Forward Current CW — 150 mA
Optical Output Power CW — 10 mW
Modulator Reverse Voltage — — 5 V
Modulator Forward Voltage — — 1 V
Monitor Diode Reverse Voltage — — 10 V
Monitor Diode Forward Voltage — — 1 V
Storage Temperature — — –40 to +85 C
Operating Temperature — — –10 to +75 C
Thermistor Temperature** — — 100 C
Thermoelectric Cooler in Heating Mode** — — 0.5 A
Minimum and maximum values specified over operating case temperature range. Typical values are measured at room temperature (25C) unless otherwise noted.

Table 4. Optical and Electrical Specifications (Chip operating temp. = 20C to 35C, except where noted.)

Parameter Symbol Conditions Min Max Unit
Threshold Current (BOL) ITH — 5 35 mA
Forward Voltage VF IF = IOP @ TOP — 2.2 V
Operating Current IOP — 50 100 mA
Threshold Power PTH IF = ITH, VM *= 0V — 80 mW
Fiber Output Power (Average), BOL PAVG Note 1 0.5 +3.0 dBm
Fiber Output Power (Average), EOL PAVG 0 2.5 dBm