Clear Communication Systems Limited( Formerly Optiwave Photonics Ltd.)

Mallapur, Hyderabad, Telangana

The Erbium Doped Fiber Amplifiers (EDFA) has become one of the key products required in the day-to-day activities like communication, entertainment, etc. This ubiquitous presence & requirement has led to the development of first indigenous EDFA that meets all the current & future requirement of the users at optimal cost. This EDFA called as Optical Amplifier is available in different versions like rack mountable, bench-top and only as a gain block also. These amplifiers are available in different models to suit the customers specific requirements and application. Customized specifications of EDFA are available on request. FEATURESThe required model can be selected based on customer requirement.The small signal gain can be up to +35 dBThe available output powers are from +10 to +23 dBmProvision for co-propagating and counter-propagating of pump power. The unit is provided with RS232 interface, LAN interface along with SNMP capabilities.The user can set the required output power or define the pump laser drive conditions.The unit is provided with power supplies, AC mains (90 to 270 V, 50 2 Hz) or -48 4 V or +5V. APPLICATIONSNetwork signal boosterSDHSONET systemsCATVR&D applicationsOEM application

We are offering stabilized light source. optiwave photonics limited is an iso 9001 : 2000 certified company with its state-of-theartr & d centre approved by dsir, ministry of science & technology, govt of india. the recent advances in technology have enabled to develop a compact, handy and stablelaser light source. featuresavailable in different versions based on wavelength of operation and single or dualwavelength. organic colour graphical display with 128 x 128 pixels. keypad with soft touch keys for smoother operation and long life. can be operated with internal battery or ac power supply. provision for battery charging with-in the instrument. the battery can be charged from adapter or usb port of pc. the output power is fixed at -7 dbm or any value as required by the customer. The laser source output can be modulated at three different frequencies. Auto off of the unit for power saving and long battery life. The instrument is provided with soft start for the laser diode and slow turn on & off. Wavelength identification with the corresponding optical power meter.

We Have Optical Redundant Switch.The Network failure is one of the last things that a network integrator would want to happen. Thus it becomes essential that the network is up and running 24x7 and 365 days. Especially when we look at the CATV network, the consumer would never want disruption in the signal under any circumstances. Thus the optical networks are designed to meet this criterion. But the problem persists at the last mile cable operator wherein they receive only one signal or have provision for receipt of two signals. In case of single signal the operator has to wait until restoration of the signal. In case of two signals, the operator must notice failure of one signal then move to second signal which may not be fully relied upon since the operator has to continuously monitor the signals. This problem can be overcome by use of this equipment, Optical Redundant Switch ORS 901. This instrument would receive two input signals and transmit one of them to the output depending on the settings. Thus the switching would happen automatically without any human interface, thus avoiding any delays. Thus auto-redundancy can be achieved. FEATURESThe equipment is available in 19 rack system for ease of mounting in existing racksDifferent versions are available with two inputs, four inputs and eight inputsFast switching times of the order of msLow insertion loss for the equipmentProvision to set the switching limits for the two inputsAvailable with SNMP to monitor remotely using MIB browser Option for selecting AC or DC power supply One input signal can be latched to output, that works without power supply APPLICATIONSFiber optic Network redundancyCATV operatorsR&D applicationsOEM application

We Offer Optical Amplifier.The High Power Optical Amplifiers Model 916H is primarily used in FTTH distribution applications. It comes with single input port and up to 32 output ports. It is configured for high output powers up to +33 dBm and can service more than 1000 CPEs/ONTs. These amplifiers are available in different models to suit the customers specific requirements. The unit is available in 2U rack mountable version that can be easily fixed in any standard 19 racks. FEATURES High output powers are from +13 to +20 dBm per portUp to 32 output portsIntegrated safety featuresInterface options of with RS232, LAN along with SNMP capabilities.The unit is provided with power supplies, AC mains (90 to 270 V) or -48 4 VAPPLICATIONS FTTHCATV distributionRF video over FiberTriple-Play services

We Offer Optical Power Meter. FEATURESThe instrument is very small in size that of a palm and light weight so that it canbe carried very easily in pocket. Designed with advanced micro-controller for continuous operation and accuratemeasurement of the optical power levels. The instrument has a very large dynamic range of measurement. The unit is provided with a flexible keypad with all the keys clearly markedwith relevant symbols or text. Auto shutdown feature will turn Off the unit automatically in no key is pressed. Provision for storing the data and retrieve. APPLICATIONSFiber optic network installation & maintenanceLAN / WAN testingResearch applicationsOEM applications

We Offer Varable Optical Attenuator.Optiwave Photonics Limited is an ISO 9001 : 2000 certified company with its state-of-theart R & D centre approved by DSIR, Ministry of Science & Technology, Govt of India.With the recent advances in technology the requirement of sophisticated control of power attenuation has become necessary. This means a replacement for the bulk attenuators need to be identified. One such product is this variable optical attenuator where the attenuation can be controlled at finger tips with more accuracy and repeatability.FEATURESProvided with 7-segment display having wide viewing angle.Keypad with soft touch keys for smoother operation and longer life.The unit can be operated with internal battery or ac adapter.The charging circuit is provided within the instrument along with charging indication.Power consumption is low thus ensuring long battery life.Operating over a wide attenuation range of 60 dB.Auto Off of the unit for power saving and long battery life.PC interface via RS232 for control & monitoring.APPLICATIONSOptical network installation & maintenanceO & M applications

Optical Delay line for RF and Microwave applications uses low loss optical fiber to offer fixed delay based on the length of the optical fiber. Optical fiber based delay system offers superior performance for radar testing, signal processing and phased array antennas. In a fiber optic delay line system a transmitter converts the RF signal to an optical modulated signal in the form of time varying laser light intensity which is transmitted over a long optical fiber, length of the fiber being chosen depending on the delay required. At the other end of the fiber, a receiver detects the attenuated optical signal and converts it back to RF signal and amplifies it to the required power level. By choosing a proper fiber length any delay between 0.1 S to 300 S is possible. Features Delay .1 S 300 S (fixed) Frequency Range 0.1 4 GHz.Delay Accuracy 1% 5 ns Flat frequency responseCUSTOMIZATION AS PER USER SPECIFICATIONS ApplicationsRadar TestingPhased Array Antenna Signal Processing

We have RF over Fiber. Optical fiber is medium of choice in wide, metro, access, and local area (wired) networks. Oneinteresting approach to integrate optical fiber networks & wireless networks is radiooverfiber(RFoF) .In RFoF networks, radiofrequencies (RFs) are carried over optical fiber links to supportvarious wireless applications. Replacing the thick coaxial cables or waveguides with opticalfibers significantly reduces weight and physical space in marine, airborne and landbasedcommunication applications. The optical fiber provides low loss and is immune to EMI effects, thereby providing better signal quality at optimized cost.Applications:Clear Communication Systems Limited has developed products that are meant for convertingthe RF signal to optical and vice versa. These products are designed, developed and tested fordifferent networks as mentioned belowHigher frequencies up to 18 GHz for satellite, radar, etc communicationsGSM 900 GSM 1800 for mobile communicationUMTS 2100 WCDMA 2100 for 3G mobile communicationWiMAX for voice, video & dataThese products can readily be used inConnecting remote antennas to central indoor stations.CATV & DTH video distributionDistributed Antenna SystemsRF RepeatersRemote SignalingSatellite communicationTo cover shadow regions of GSM signals

We Offer Optical Transmitter.The current market requirement is, customer is looking for multiple services with minimal price and service providers do not want to invest more. This requirement has ensured the faster growth of GPON and services based on this technology. A new service that can be provided to customer is the Video signal with the help of CATV Transmitter CTX 901E. This CTX 901E uses the already available infrastructure of Cable TV thus meeting the requirement of the service provider. The equipment is designed based on the principle of External modulation. The transmitter utilizes high linearity DFB laser, RF power automatic gain control, along with RF pre-distortion circuit. The built-in microcontroller monitors the transmitter working status and automatically ensures the optimal performance of the instrument. This product is available in different versions based on the output laser power levels. These units are low power consumed, compact & rugged in design. FEATURESLow noise high linearity cooled DFB laserGaAs Technology up to 1000 MHz (typical 870 MHz)Excellent pre-distortion technology improves CTB, CSO and C/NBuilt-in microcontroller accurately monitors laser output power and temperature.Front panel LCD displays the status parameters and function message.191U standard rack APPLICATIONSCATV Forward pathSub-headendOEM applicationVideo signal in GPON - FTTH