1. Introduction to Modulight transmitter laser products Updated 4 Oct 2004

2. Outline OSI Model Modulight products Customer benefits Applications Product list Contact info

3. Open Systems Interconnection--Reference Model 1.Physical Layer 2.Data Link Layer 3.Network Layer 4.Transport Layer 5.Session Layer 6.Presentation Layer 7.Application Layer

4. Transport path – optical fiber Single-mode Multimode Optical source Laser VCSEL FP DFB EML Tunable lasers LED Optical detector pin APD Physical layer elements of fiber optical networks Amplifier EDFA SOA MUX/DeMUX Filter Attenuator Polarizer Switch Etc. (Technology)

5. Modulight transmitter laser products by integration level Bare dies For customers who are building optical modules and have expertise in optoelectronic packaging process and capability of handling bare dies TO-cans For customers who are manufacturing optoelectronic transceivers, optical sub- assemblies or making fiber pigtailing Fiber pigtails For customers without optoelectronic packaging capabilities who are using lasers as part of their network interface cards Note: Modulight current standard product portfolio does not contain butterfly packages, mini-DILs, or cooled lasers

6. Modulight transmitter laser products by wavelength 1310 nm (dispersion minimum of optical fiber) Used in single-mode fiber networks for short and intermediate reach 1490 nm Used in Passive Optical Networks (PON) 1550 nm (attenuation minimum of optical fiber) Used in single-mode fiber networks for long reach Coarse Wavelength Division Multiplexing, CWDM 8 wavelengths from 1470 to 1610 nm with 20 nm spacing, used to transport several multiplexed signals in the same fiber Note: Modulight current standard product portfolio does not contain 850 nm (used for short distance in multimode fiber) or DWDM, Dense Wavelength Division Multiplexing products

7. Modulight laser products by laser type DFB, Distributed Feedback laser Internal grating locks emission wavelength Single longitudinal and transverse mode Used in intermediate and long haul FP, Fabry-Pérot laser Laser cavity locks emission wavelength Single transverse and multiple longitudinal modes Used in short and intermediate haul Note: Modulight current standard product portfolio does not contain Vertical Cavity Surface Emitting Lasers, VCSELs or Externally Modulated Lasers, EMLs

8. Customer benefits Demonstrated capability to speed up customer projects and improve products by active participation Reliable and independent long-term chip supply Narrow spectral linewidth of FP lasers enables longer transmission distances with high-speed operation Robust core material design with superior temperature behavior for uncooled applications in harsh environments Controlled design and volume manufacturing process from epiwafer to fiber pigtail level Custom features available with short lead time to production Strong technical support from Modulight team with detailed reporting capabilities for customer benefit

9. Modulight transmitter laser product applications

10. Public Switched Network (PSN) A common carrier network that provides circuit switching among public users Public Switched Telephone Network (PSTN) Domestic telecommunications network usually accessed by telephones, key telephone systems, private branch exchange trunks, and data arrangements Public Data Network (PDN) A network established and operated by a telecommunications administration, or a recognized private operating agency, for the specific purpose of providing data transmission services for the public Subject to the telecommunications standards, regulations and recommendations undertaken in the convention of the International Telecommunication Union

11. LANs Local Area Network (LAN): A data communications system that lies within a limited spatial area has a specific user group has a specific topology is not a public switched telecommunications network (PSTN), but may be connected to one LANs are not subject to public telecommunications regulations. LANs are usually restricted to relatively small areas, such as rooms, buildings, ships, and aircraft

12. WANs, MANs and SANs An interconnection of LANs within a limited geographical area, such as a military base, is commonly referred to as a campus area network An interconnection of LANs over a city-wide geographical area is commonly called a metropolitan area network (MAN) An interconnection of LANs over large geographical areas, such as nationwide, is commonly called a wide area network (WAN). SANs are high performance LANs designed for server clusters. A typical application of SAN is network data storage. This type of SAN supports transfers of large quantities of data to and from multiple disk arrays.

13. PSN standards – SONET and SDH Telecommunications interface standards Originally designed with voice communication in mind High reliability Fast network restoration times High redundancy High cost

14. PSN standard – SONET Synchronous Optical Network American National Standard (published by ANSI), developed by Alliance for Telecommunications Industry Solutions (ATIS) Standards Committee T1 – Telecommunications www.t1.orgwww.t1.org An interface standard for synchronous optical fiber transmission, applicable to the Physical Layer (PHY) of the OSI reference model (physical layer specifications, T1.105.06-2002) Uses a basic data rate of 51.840 Mb/s called OC-1 (Optical Carrier 1) The SONET hierarchy is defined in multiples of OC-1, up to OC-768, for a maximum data rate of 39.81312 Gb/s Because SONET only describes the transmission and multiplexing of information, without knowing what type of data or switching is being used, it can operate with nearly all emerging switching technologies.

15. PSN standard - SDH Synchronous Digital Hierarchy Developed by International Telecommunications Union (ITU) www.itu.org, sponsored by the United Nationswww.itu.org ITU equivalent to SONET Uses a basic data rate of 155.520 Mb/s called STM-1 ITU recommendation G.957 (STM-1 to STM-16) ITU recommendation G.691 (STM-4 to STM-64 with amplifiers and STM-64 short-reach without amplification, application codes for STM-256)

16. SONET / SDH data rates Optical Level Electrical Level Line Rate (Mbps) Payload Rate (Mbps) Overhead Rate (Mbps) SDH Equivalent OC-1STS-151.84050.1121.728- OC-3STS-3155.520150.3365.184STM-1 OC-12STS-12622.080601.34420.736STM-4 OC-48STS-482488.3202405.37682.944STM-16 OC-192STS-1929953.2809621.504331.776STM-64 OC-768STS-76839813.12038486.0161327.104STM-256

17. SAN standard – Fibre Channel Arose from a combination of other computer standards Fibre Distributed Data Interface (FDDI) Small Computer System Interface (SCSI) High Performance Parallel Interface Intelligent Parallel Interface Specifically designed for data storage Promoted by Fibre Channel Industry Association www.fibrechannel.orgwww.fibrechannel.org Developed by INCITS committee T11 (InterNational Committee for Information Technology Standards) www.t11.orgwww.t11.org ANSI approved 1 Gb/s, 2 Gb/s and 4 Gb/s solutions, 8/10 GFC in development Foundation for over 90% of all SAN (Storage Area Network) installations throughout the world. More than 80 million ports installed to date (www.fibrechannel.org)www.fibrechannel.org

18. Fibre Channel data rates * Throughput for duplex connections SpeedThroughput* (MBps)Line Rate (Gbaud)Released 1 GFC2001.06251998 2 GFC4002.1252000 4 GFC8004.252002

19. SAN applications High-performance storage High-performance disk and tape Large data bases and data warehouses Storage backup systems and recovery Server clusters Network-based storage (i.e., SANs) High-performance workgroups Campus backbones Digital audio/video networks

20. LAN standard – Ethernet Ethernet – a data communications standard protocol, originally for a 10- Mb/s baseband local area network (LAN) bus Corresponds to layers 1 and 2 in OSI reference model Defined by IEEE Computer Society’s LAN/MAN Standards Committee (IEEE 802) IEEE 802.3 CSMA/CD (Ethernet) working group http://grouper.ieee.org/groups/802/3/index.html http://grouper.ieee.org/groups/802/3/index.html Promoted by 10 Gigabit Ethernet Alliance www.10gea.orgwww.10gea.org Ethernet is a standard for using various transmission media, such as coaxial cables, unshielded twisted pairs, and optical fibers Widely deployed in LANs Simple Cost-efficient Scalable Widely deployed Lacks bandwidth management properties Slow network restoration times compared to SONET/SDH

21. Ethernet data rates 10BASE-T – 10 Mb/s 100BASE – 100 Mb/s (Fast Ethernet) 1000BASE-X – 1 Gb/s optical Gigabit Ethernet (GigE, IEEE 802.3ab) 10GBASE – 10 Gb/s (10 GbE, IEEE 802.3ae)

22. Optical Internetworking Forum www.oiforum.com, founded 1998 by Cisco and Cienawww.oiforum.com Open industry forum focused on accelerating the deployment of optical internetworks Optical interface specification copied from ITU-T recommendation G.691 (STM-64) Optical interface implementation agreements: VSR4-01 - OC-192 Very Short Reach Interface, 12 Fiber 850nm VSR4-02 - OC-192 Very Short Reach Interface, 1 Fiber 1310nm VSR4-03 - OC-192 Very Short Reach Interface, 4 Fiber 850nm VSR4-04 - OC-192 Very Short Reach Interface, 1 Fiber 850nm VSR4-05 - OC-192 Very Short Reach Interface, OXC 1310nm VSR5-01 - OC-768 Very Short Reach Interface

23. Modulight transmitter laser products ML-C-1310-FP-10G 1310 nm 10 Gbps FP laser as bare die ML-C/T/COAX-1310-FP-2G5 1310 nm FP laser for 1.25/2.5 Gbps, as bare die, TO-can or coaxial fiber pigtail ( Qualified by European Space Agency ) ML-C/T/COAX-1310-DFB-2G5 1310 nm DFB laser for 1.25/2.5 Gbps, as bare die ML-COAX-1310-FP/DFB-AL 1310 nm coaxial fiber pigtail for analog applications ML-C/T/COAX-1490-DFB-2G5 1490 nm DFB laser for 1.25/2.5 Gbps PON, as bare die, TO-can or coaxial fiber pigtail ML-C/T/COAX-1550-FP-2G5 1550 nm 2.5 Gbps FP laser, as bare die, TO-can or coaxial fiber pigtail ML-C/T/COAX-1550-DFB-2G5 (preliminary product) 1550 nm 1.25/2.5 Gbps DFB laser, as bare die, TO-can or coaxial fiber pigtail ML-COAX-1550-FP/DFB-AL 1550 nm coaxial fiber pigtail for analog applications ML-COAX-CWDM-DFB-2G5 2.5 Gb/s coaxial fiber pigtail DFB lasers in CWDM wavelengths 1470-1610 nm Customized lasers

24. Thank you! Got interested? For up-to-date product details, contact us through your local representative or directly via www.modulight.com/contact.html sales@modulight.com Pekko Sipilä, Product Line Manager pekko.sipila@modulight.com