Transcript Introduction_to_Modu..

Introduction to
Modulight transmitter laser products
Updated 4 Oct 2004
Outline
•
•
•
•
•
•
OSI Model
Modulight products
Customer benefits
Applications
Product list
Contact info
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
Physical layer elements of fiber optical networks
• Transport path – optical
fiber
• Single-mode
• Multimode
• Optical source
• Laser
•
•
•
•
•
VCSEL
FP
DFB
EML
Tunable lasers
• LED
• Optical detector
• pin
• APD
• Amplifier
• EDFA
• SOA
•
•
•
•
•
•
MUX/DeMUX
Filter
Attenuator
Polarizer
Switch
Etc.
(Technology)
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 subassemblies 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
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
Modulight laser products by laser type
• DFB, Distributed Feedback laser
• 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
-40
-50
Intensity (a.u.)
• Internal grating locks emission wavelength
• Single longitudinal and transverse mode
• Used in intermediate and long haul
-30
-60
-70
-80
-90
1280
1285
1290
1295
1300
1305
1310
1315
1320
1325
1330
Wavelength (nm )
Laser: 036-006, 25°C, 50mA
Intensity / dBm
1250 1260 1270 1280 1290 1300 1310 1320 1330 1340
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
Customer benefits
• 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
• Demonstrated capability to speed up customer projects and
improve products by active participation
Modulight transmitter laser product applications
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
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
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.
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
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.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.
PSN standard - SDH
• Synchronous Digital Hierarchy
• Developed by International Telecommunications
Union (ITU) www.itu.org, sponsored by the United
Nations
• 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)
SONET / SDH data rates
Optical
Level
Electrical
Level
Line Rate
(Mbps)
Payload Rate
(Mbps)
Overhead Rate
(Mbps)
SDH
Equivalent
OC-1
STS-1
51.840
50.112
1.728
-
OC-3
STS-3
155.520
150.336
5.184
STM-1
OC-12
STS-12
622.080
601.344
20.736
STM-4
OC-48
STS-48
2488.320
2405.376
82.944
STM-16
OC-192
STS-192
9953.280
9621.504
331.776
STM-64
OC-768
STS-768
39813.120
38486.016
1327.104
STM-256
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.org
• Developed by INCITS committee T11 (InterNational Committee for
Information Technology Standards) www.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)
Fibre Channel data rates
Speed
Throughput* (MBps)
Line Rate (Gbaud)
Released
1 GFC
200
1.0625
1998
2 GFC
400
2.125
2000
4 GFC
800
4.25
2002
* Throughput for duplex connections
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
LAN standard – Ethernet
•
Ethernet – a data communications standard protocol, originally for a 10Mb/s baseband local area network (LAN) bus
•
•
Defined by IEEE Computer Society’s LAN/MAN Standards Committee
(IEEE 802)
•
•
•
•
Corresponds to layers 1 and 2 in OSI reference model
IEEE 802.3 CSMA/CD (Ethernet) working group
http://grouper.ieee.org/groups/802/3/index.html
Promoted by 10 Gigabit Ethernet Alliance www.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
Ethernet data rates
• 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)
Optical Internetworking Forum
• www.oiforum.com, founded 1998 by Cisco and Ciena
• 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
Modulight transmitter laser products
•
ML-C-1310-FP-10G
•
•
ML-C/T/COAX-1310-FP-2G5
•
•
(preliminary product)
1550 nm 1.25/2.5 Gbps DFB laser, as bare die, TO-can or coaxial fiber pigtail
ML-COAX-CWDM-DFB-2G5
•
•
1550 nm 2.5 Gbps FP laser, as bare die, TO-can or coaxial fiber pigtail
ML-C/T/COAX-1550-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
•
•
1310 nm DFB laser for 1.25/2.5 Gbps, as bare die, TO-can or coaxial fiber pigtail, also
pigtail for analog applications
ML-C/T/COAX-1490-DFB-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), also pigtail for analog applications
ML-C/T/COAX-1310-DFB-2G5
•
•
1310 nm 10 Gbps FP laser as bare die
2.5 Gb/s coaxial fiber pigtail DFB lasers in CWDM wavelengths 1470-1610 nm
Customized lasers
Thank you!
Got interested? For up-to-date product details, contact us
through your local representative or directly via
www.modulight.com/contact.html
[email protected]
Pekko Sipilä, Product Line Manager
[email protected]