CA-iTLA8600 C Band 89 CH Integrable Tunable Laser AssemblyWith Dither Function
Technical Specifications Ver 1.01
June, 2018www.caoptronicsgroup.com

CA-iTLA8600 C Band 89 CH Integrable Tunable Laser Assembly

Description
The CA OPTRONICS GROUP CA-iTLA8600 is a tunable laser assembly compatible with the OIF“Integrable Tunable Laser Assembly” MSA, based on a novel 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 orthermal adjustments are necessary, channel switching is fast with straightforward control circuitry. The SOA
facilitates flexible control of the output power and acts as a shutter when reverse biased, enabling dark tuning
between channels. The integrated chip has been optimized to improve the power efficiency. The chip is basedon advanced InP technology platform, with proven reliability. The devices are packaged into a compact, lowprofile 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 front facet of the chip, enabling aclosed loop control that guarantees stability of the frequency and output power over life, to within therequirements of 50 GHz ITU grid spacing applications. The assembly contains all electronics necessary tocontrol the laser, offering users a simple and well-defined digital command interface. The CA-iTLA8600 isprovided with polarization maintaining fiber for use with an external modulator.

Features OIF “Integrable Tunable Laser Assembly” MSA compatible laser and control electronics assembly Full C-band tuning (89 channels at 50 GHz spacing) High, flexibly adjustable output power, from 9 to 13 dBm
 Low power dissipation, typically < 3.7 W at 75°C
 High side-mode suppression ratio > 40 dB
 Integral wavelength locker, allowing stabilization to within ±2.5 GHz over life, compatible with50 GHz ITU grid spacing Up to ±5 GHz detuning from ITU grid
 Channel to channel tuning time < 0.1 s
 Dark tuning by reverse biasing the integrated amplifier (> 40 dB suppression) FM dither for SBS suppression
 Transmitter trace tone (TxTRACE) Polarization maintaining fiber pigtail

Applications
 Tunable DWDM transponders and transceivers
 Dynamic provisioning and wavelength routing in metro DWDM systems Reconfigurable optical
add/drop multiplexers (ROADM)
 Optical packet or burst-mode switching Test and measurement
 DWDM Transmission system

Specifications
Optical Performance

1. Range over which the output power can be adjusted down from the output
power Pmax, while maintaining all other optical specifications.
2. Output power when the optical output is disabled, e.g. while tuning to anotherchannel.
3. Start frequency of the 89 channel range to be specified when ordering.

Electrical and Thermal Performance

DitherAM dither for transmitter trace tone purposes can be generated by applying an analog signal topin 14 of the ITLA module, within the limits defined below. A triangular FM dither, typically used tosuppress stimulated Brillouin scattering (SBS), is generated internally within the ITLA module when
the Dither register is set to 0x0012.

Fiber Connection

Absolute Maximum Rating

Mechanical Package
For ITLA with PN: CA-iTLA8600 Dimensions are in millimeters. General tolerances are ±0.13 mm.
Mounting holes are M2 tapped holes

Pin Assignment

1224RST*

DIS*

SRQ*

Reset

Purpose: Disables laser output and holds the module inRESET Initial State: Any – user application specific
Action: Laser OFF, TEC OFF, Module CPU held in RESET,
Communication protocol is OFF Resultant State: High,
Must remain high for laser to operate Attributes:
When active, lowest current draw from the module

LVTTL
input,
active low

Disablemodule’s
optical output

Purpose: Provide hardware control to kill laser output.
Initial State: Any – user application specific Action:
High = laser output controlled by protocol; Low = laser
output OFF Resultant State: When DIS* asserted,
communication protocol is ON, software enable (SENA)
reset. Attributes: Bypasses communication protocol toturn laser OFF. Re-enabling of the laser requires setting
SENA. Otherwise does not interfere with module
settings

LVTTL
output,active low

Purpose: General purpose service request. Initial State:
High (No service requested) Action: Generates request
for service as required to report a variety of conditions
by setting line low. SRQ* is asserted when the result ofthe status (0x20,0x21) OR’d with SRQT trigger (0x28) is
non-zero. Resultant State: ·Communication protocol
is ON ·SRQ* conditions can be read and cleared
Programmable through interface Attributes: SRQ conditions (andmodulelimits) are software configurable and can be reservice
configured by the user through the interface. Status
requestbits must be cleared to de-assert SRQ*.
Purpose: Provide hardware control to reset physicalinterface Initial State: Any – user application specific
Action:High or LOW = No effect; Low to High transition– Reset communications interface, clear input buffers,
terminate current packet Resultant State:Communication can be commenced upon deassertion
with a new packet. Attributes: Provides ability to reset
communications interface

LVTTL
input,
active low

6MS*

LVTTL
input,
active lowhightransition

8TxD

LVTTL
output

10RxD

LVTTL input

13OIFReserved

LVTTL
input

OIF ReservedAM
dither

2.5V p-psinusoidal,
analog inpu

Ditheramplitude
analog signal

14

Module IO
Select (Resetcommunications interface)
Module’sTransmit Data
Module’s
Receive Data

Purpose: Transmit outbound packets from module
Purpose: Receive inbound packets from host
No user connection Purpose: Provide for possible
future expansion of communications interfaces
Purpose: Provide trace tone capability. AC coupledinside ITLA. Pull down to ground if not used.

Operate:
1. According to the above pin definition to connect the hardware，which includes VCC, GND,TXD (TTL), RXD (TTL), and other signals.
2. According to OIF-ITLA-MSA-01.2 Standard protocols and validation method, Through theUART to control the ITLA module, the details please reference OIF-ITLA-MSA-01.2standard
protocols

Order Information
PN: CA-iTLA8600 Description: Tunable laser assembly, 89 channels at 50 GHz spacing from
191.70 THz to 196.10 THz, 13 dBm output power, 900um loose tube single mode fiber pigtail withFC test plug

United States:
CA OPTRONICS GROUP INC.
3652 Edison Way
Fremont, CA 94538
USA
Tel: 1-510-366-7353
Fax: 1-510-795-1795
www.caoptronicsgroup.com
Product specifications and descriptions in this documentation subject to change without notice.
Copyright @ 2008 CA OPTRONICS GROUP INC.
Jule., 201861000109 V1.01

Product specifications and descriptions in this documentation subject to change without notice.
Copyright @ 2008-2018 CA OPTRONICS GROUP INC.