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 Finisar Corporation November 2015 Rev. C1 Page 1 Product Specification CW Tunable Laser – Butterfly Package S7500 PRODUCT FEATURES

  • Full C -band tuning (89 channels at

50 GHz spacing)

  • High, flexibly adjustable output power, from 9 to 13 dBm
  • Low power dissipation, typically < 2.2 W at 75°C
  • High side -mode suppression ratio > 40 dB
  • Dark tuning by reverse biasing t he integrated optical amplifier
  • Compact, low-profile, hermetic laser package with internal optical isolator
  • Integral wavelength locker, allowing stabilization to within ±2.5 GHz over life, compatible with 50 GHz ITU grid spacing
  • Polarization maintaining fiber pigtail

APPLICATIONS

  • DWDM transmission systems
  • Tunable DWDM transponders and transceivers
  • Dynamic provisioning and wavelength routing in metro DWDM systems
  • Optical packet or burst -mode switching
  • Test and measurement Finisar’s S7500 tunable laser incorporates a monolithic InP chip that integrates a tunable MG-Y laser with a semiconductor optical amplifier (SOA). The MG -Y (Modulated Grating Y-branch) laser is an electronically tuned device that can address any wavelength in the C -band. Since no mechanical or thermal adjustments are necessary, channel switching is very fast. The SOA facilitates flexible control of the output power and acts as a shutter when reverse biased, enabling dark tuning between channels. The devices are packaged into a compact, low -profile hermetically sealed package, with an internal optical isolator and a wavelength locker. The locker monitors both output power and frequency of the light emitted from the chip, enabling a closed loop control that guarantees stability of the frequency and output power over life, to within the requirements of 50 GHz ITU grid spacing applications. The S7500 is provided with polarization maintaining fiber for use with an external modulator. The laser is compliant per RoHS Directive 2011/65/EU

S7500 Product Specification  Finisar Corporation November 2015 Rev. C1 Page 2 PRODUCT SELECTION Product code Description

7500001 Tunable laser, butterfly package , 89 channels at 50 GHz spacing from

191.70 THz to 196.10 THz, 13 dBm output power, 400 µm polarization maintaining fiber pigtail with ST test plug I. 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 ope ration 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 Symbol Min Typ Max Unit Ref. Storage temperature TS -40 85 °C Relative humidity RH 0 85 % 1 Laser diode reverse voltage (all sections) 3 V Laser gain current Ig 160 mA Reflector currents Irl, Irr 50 mA Phase current Ipc 10 mA SOA current ISOA 240 mA Photodiode bias voltage VPD,ref, VPD,λ -5 0 V Photodiode reverse current IPD,ref, IPD,λ 2 mA TEC current ITEC 1.2 A TEC voltage VTEC 3.5 V Notes: 1. Non-condensing. II. Electrical & Thermal Characteristics Parameter Symbol Min Typ Max Unit Ref. Operating case temperature TOP -5 75 °C Laser chip temperature TL 25 30 °C Laser gain current Ig 98 100 mA Reflector currents (left, right) Irl , Irr 33 mA Phase current Ipc 7.5 mA SOA current ISOA 90 167 mA Photodiode bias voltage VPD,ref, VPD,λ -3 0 V Thermistor resistance Rth 10 kΩ 1 Thermistor sensitivity index β 3930 K 1 TEC current ITEC <0.75 0.85 A 2 TEC voltage VTEC <2.5 2.8 V 2 Total power dissipation Ptot <2.2 2.8 W 2 Notes: 1. With the laser chip temperature set to 25°C. 2. In steady state, with the laser chip temperature set to 25°C, and a case temperature of 75°C.

S7500 Product Specification  Finisar Corporation November 2015 Rev. C1 Page 3 III. Optical Characteristics (TOP = -5 to75°C) Parameter Symbol Min Typ Max Unit Ref. Output power Pmax 13 dBm 1 Output power variation over life ΔP -0.5 0.5 dB 2 Output power adjustment range 4 dB 3 Output power when disabled -35 dBm 4 Lowest emission frequency νmin 191.15 191.70 THz Highest emission frequency νmax 196.10 196.25 THz Lowest emission wavelength λmin 1527.6 1528.8 nm Highest emission wavelength λmax 1563.9 1568.4 nm Channel spacing (ITU grid) 50 GHz Number of channels 89 5 Frequency accuracy Δν -2.5 2.5 GHz 6 Side-mode suppression ratio SMSR 40 dB Optical signal-to-noise ratio OSNR 50 55 dB 7 Linewidth LW 5 MHz 8 Relative intensity noise RIN -140 dB/Hz 9 Back reflection tolerance -14 dB Optical isolation 40 dB Polarization extinction ratio PER 20 dB Notes: 1. For all channels, BOL 2. With closed loop control on SOA current to maintain a fixed reference PD current. 3. Range over which the output power can be adjusted by changing the SOA current, down from the output power Pmax, while maintaining all other optical specifications. 4. Output power with reverse biased SOA; used in order t o block the laser output, e.g. while tuning to another channel. 5. Consecutive channels at 50 GHz spacing within the [ν min … νmax] range. Default start frequency is 191.70 THz (start wavelength 1563.9 nm). Custom tuning ranges are available upon request. Contact Finisar Sales for details. 6. With closed loop control on the left reflector, right reflector, and phase current, in order to maintain a fixed ratio of the etalon and reference PD currents. See Finisar application note AN- 2095 for details. 7. In a 0.1 nm wide band. 8. Intrinsic Lorentzian linewidth, measured e.g. using a phase noise spectral density measurement , disregarding low frequency phase noise originating from the drive circuitry. 9. Average value over the frequency range from 0.1 GHz to 10.0 GHz.

S7500 Product Specification  Finisar Corporation November 2015 Rev. C1 Page 4 V. Wavelength Locker Parameter Symbol Min Typ Max Unit Ref. Reference PD responsivity (relative to fiber-coupled power) IPD,ref/P 10 25 µA/mW Normalized locker ratio at ITU channel R 40 75 % 1 Locker slope @ ITU channel dR/dν 3 7 %/GHz 2 @ ±5 GHz offset 1.7 9.0 Notes: 1. The normalized locker ratio R is defined as the normalized ratio of the etalon photodiode current IPD,λ to the reference photodiode current IPD,ref as expressed by the equation: R= IPD,λ IPD,ref IPD,λ IPD,ref MAX 2. The locker slope is defined as the derivative of the normalized locker ratio R with respect to the emission frequency ν. Figure 1 Typical locker response curve.

S7500 Product Specification  Finisar Corporation November 2015 Rev. C1 Page 5 VI. Fiber Connection Parameter Symbol Min Typ Max Unit Ref. Fiber type Polarization maintaining single-mode fiber 1 Fiber length 0.9 m Mode field diameter 9.5 10.5 11.5 µm Fiber cladding diameter 122 125 128 µm Fiber polymer coating diameter 380 400 420 µm Polarization orientation Parallel to slow axis of PM fiber Fiber bend radius 20 mm Fiber proof strength 200 kpsi 1.38 GPa Notes: 1. Fujikura SM15-PS-U40A-H PANDA or equivalent. VII. Pin Descriptions Pin Symbol Name/Description Ref.

1 TEC (-) Thermo-electric cooler (-)

2 TEC (+) Thermo-electric cooler (+)

3 Th Laser thermistor

4 Not connected

5 GND (Th, PD) Thermistor ground, photodiode common cathode

6 PD,λ Etalon photodiode anode

7 PD,ref Reference photodiode anode

8 Not connected

9 SOA SOA anode

10 LD,gain (g) Laser gain section anode

11 LD,phase (pc) Laser phase section anode

12 LD,left (lr) Laser left reflector anode

13 LD.right (rr) Laser right reflector anode

14 GND (LD, SOA) Laser + SOA common cathode

15 Not connected

16 Not connected

17 Not connected

18 Not connected

19 Not connected

20 Not connected

21 Not connected

S7500 Product Specification  Finisar Corporation November 2015 Rev. C1 Page 6 VIII. Mechanical Dimensions Dimensions are in millimeters. Figure 2 Mechanical drawing of the S7500 tunable laser.

S7500 Product Specification  Finisar Corporation November 2015 Rev. C1 Page 7 IX. Patents This product is protected under U.S. Patent Numbers 6,728,279 and 7,058,096, as well as other patents pending worldwide. X. Electrostatic Discharge S7500 tunable lasers have been tested according to TIA-455-129 (FOTP-129) 2 “Procedures for Applying Human Body Model Electrostatic Discharge Stress to Package Op toelectronic Components”. The S7 500 tunable laser is classified as HBM ESDS Component Sensitivity Class 1A (per ESDA/JEDEC JS -001- 2010 3). CAUTION: This device is susceptible to damage as a result of electrostatic discharge. Take proper precautions during both handling and testing. Follow guidelines such as JEDEC standard JESD625-A (December 1999) 4. XI. Laser Safety The S7 500 tunable laser is classified as class 1M per IEC standard 60825- 1 (2007- 03) 5. This product complies with FDA/CDRH, 21 CFR 1040.10 and 1040.11 6 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007 7. CAUTION: Invisible Laser Radiation - Do not view directly with optical instruments (magnifiers). Viewing the laser output with certain optical instruments (e.g., eye loupes, magnifiers, and microscopes) within a distance of 100 mm may pose an eye hazard. Laser power up to 100 mW at 1.55 µm could be accessible if optical connector is open or fiber is broken. Use of controls, adjustments, a nd procedures other than those specified herein may result in hazardous laser radiation exposure.

S7500 Product Specification  Finisar Corporation November 2015 Rev. C1 Page 8 XII. References 1. Directive 2011/65/EU of the European Council Parliament and of the Council, “on the restriction of the use of certain hazardous substances in electrical and electronic equipment”. Certain products may use one or more exemptions as allowed by the Directive. 2. TIA-455-129 (FOTP-129) “Procedures for Applying Human Body Model Electrostatic Discharge Stress to Package Optoelectronic Components” 3. ESDA/JEDEC JS-001-2010 “ESDA/JEDEC Joint Standard for Electrostatic Discharge Sensitivity Testing – Human Body Model (HBM) – Component Level” 4. JEDEC JESD625 -A (December 1999) “Requirements for Handling Electrostatic -Discharge- Sentitive (ESDS) Devices” 5. IEC 60825- 1 (March 2007 ) “Safety of laser products – Part 1: Equipment classification and requirements” 6. FDA/CDRH, 21 CFR 1040.10 & 1040.11 “Title 21 – Food and Drugs; Chapter I – Food and Drug Administration, Department of Health and Human Services; Subchapter J – Radiological Health; Part 1040 – Performance Standards for Light -Emitting Products; Sec. 1040.10 L aser Products & Sec. 1040.11 Specific Purpose Laser Products” 7. FDA/CDRH Laser Notice No. 50 ( June 24, 2007) “Guidance for Industry and FDA Staff Laser Products – Conformance with IEC 60825- 1 and IEC 60601- 2-22; Guidance for Industry and FDA Staff (Laser Notice No. 50)” XIII. Revision History Revision Date Description 7500001-A 2011-10-22 First release 7500001-B 2011-12-08 Updated laser safety information C1 2015-11-09 Updated logo and RoHS statement. XIV. For More Information Finisar Corporation

1389 Moffett Park Drive

Sunnyvale, CA 94089-1133 Tel: +1-408-548-1000 Fax: +1-408-541-6138 sales@finisar.com www.finisar.com